Just belatedly noticed that there's a new Unlock Your Genius problem to talk about! :)

There aren't a lot of imbalances to talk about in the position, but what few there are make me prefer Black's position:

Minor pieces: White has a B+N versus N+N, but the bishop is very bad for the moment. The pawns on d4 and f4 won't be moving to improve its scope anytime soon, and he doesn't even have the option of trying to redeploy via Bc1-a3 since his queenside pawns are also in the way.

Pawn structure: White has an isolated d4 pawn. While it's easily defended for now, it does make the activation of White's bad bishop a pain. The doubled f-pawns are not really a targetable weakness, but they also restrict the bad bishop since f5 can never be achieved without losing a pawn. White may need to play g3 at some point to free up his queen from the defense of the f4 pawn, placing his final pawn on a dark square.

Space: White has more space with his d4 and f4 pawns, but it's full of holes for Black's knights (d5 in particular, and also f5 / c4).

As sort of a fantasy position for Black, I'd put his pawn on c6, queen on d7, rooks on d8 / c8, and the e7 knight on f5 (where it would pressure d4, and also have ideas of jumping to d6-c4).

For White, I don't really see a viable plan. If it were his move, he 'might' try just playing d5 immediately, throwing away the weak pawn that's killing his bishop. That looks pretty horrible, though, winding up down a pawn, losing his space advantage and handing Black a healthy queenside pawn majority. The problem is, I don't see another plan to improve his position in any meaningful way. He could double his rooks on the c-file just for something to do, but once that's done, then what?

With Black's move here, I'd probably move pawn to c6 first (so if White tried the d5 idea, I'd meet it with cxd5 instead of Nexd5, claiming the center and a protected passed pawn).

I’m afraid I haven’t much to add to dlwyatt’s assessment.
As black, I would be thinking that I needed to do something on the white squares and to try and keep the pawns on f4 and d4 to restrict white’s bishop. Long term I would be aiming to swap queens and looking for a B v N endgame. Black’s c pawn does seem a little vulnerable though.
I wonder if white’s plan may be to play for f4-f5 (preparing with g2-g4 and Ne2-g3).
Short term, black seems to lack space and I would be thinking that exchanging a pair of knights would help ease this a bit. The N on e7 is the one I would like to exchange but this is the one guarding f5. I would be aiming to develop the black queen on d7 or c8 (keeping an eye on f5). The pawn break that looks available to black is ...c7-c5, so I would aim to be doubling rooks on the d file. I like the idea behind …c7-c6.
I’m struggling here – anyone else have any ideas?

This was from a recent (fairly rapid) game of mine. I thought I was somewhat better because of the the d5-square and the restricted white bishop, but it proved very difficult to exploit because of the weakness of the c-file, c6-square and e5-square. Eventually I only drew.
I felt at the time that I should have found a better long-term plan than the one I actually chose.
I'm open to any good ideas!

? This was from a recent (fairly rapid) game of mine. I thought I was
? somewhat better because of the the d5-square and the restricted white
? bishop, but it proved very difficult to exploit because of the weakness of
? the c-file, c6-square and e5-square. Eventually I only drew.
? I felt at the time that I should have found a better long-term plan than
? the one I actually chose.
? I'm open to any good ideas!

Here are the next few moves to give you an idea of what happened:

14... Nfd5 (14... Ned5 15. f5) 15. Ne4 Qd7 16. Rac1 Nf5 17. Qe2 Nd6 18. Ng5 f6 19. Nf3 a5 20. Rfe1 Rfe8 21. Qc2 a4 22. Qc6 Qxc6 23. Rxc6 Kf7 24. Bd2 Ra7 25. g4 Ke7 26. Rc2 Kd7 27. Kh1 b5 28. Rc5 c6 29. g5 Nc4 30. Bc1 Kd6 31. Nd2 Nxd2 32. Bxd2

Any thoughts? What next?

?
? Here are the next few moves to give you an idea of what happened:
?
? 14... Nfd5 (14... Ned5 15. f5) 15. Ne4 Qd7 16. Rac1 Nf5 17. Qe2
? Nd6 18. Ng5 f6 19. Nf3 a5 20. Rfe1 Rfe8 21. Qc2 a4 22. Qc6 Qxc6 23. Rxc6
? Kf7 24. Bd2 Ra7 25. g4 Ke7 26. Rc2 Kd7 27. Kh1 b5 28. Rc5 c6 29. g5 Nc4
? 30. Bc1 Kd6 31. Nd2 Nxd2 32. Bxd2
?
? Any thoughts? What next?

Every move you made seemed perfectly logical to me, and none of the reasons that I preferred black's position originally have changed much. The only possible improvement I managed to spot was right at the end, where you played 30... Kd6. I think White's situation improved quite a bit when he was able to play Nd2 and trade off your strong c4 knight. If your king were not on d6, that would have been prevented due to the tactical reply Nxf4 (with the Nd3 fork threatened, so he can't capture on c4. With the king on d6, Nxc4 would be check). Even Na5 would be a strong reply to Nd2, if your king weren't in d6 allowing Ne4 with check (ready to drop in to b3 at some point, and possibly exchanging off for the bishop on c1 in order to win the weak f4 pawn).

So, if I'm right and we assume Kd6 was a slight mistake, the question would be, what's a constructive plan? You've firmly fixed white's queenside pawns, you're constantly making sure that he can't unravel the position a bit with Nd2, but then what? And at the same time, what can white try to do from here? Those questions, I'm not so sure about.

The worst piece Black has right now is obviously the a7 rook, but I'm not sure yet what to do about it. Some ideas I have looked at are Raa8-d8, followed by Kc7 and maybe Ne7-f5 (pressure d4), Raa8 followed by h6 (open a kingside file, but this gets rid of white's weak f4 pawn, which is probably not a good trade), or Kc7-b6 followed by moving the a7 rook somewhere along the 7th (possibly d7 with similar plans as when it was on d8). I'm not sure any of those ideas is correct or enough to progress the position yet.

For white's part, I mainly looked at either advancing the h-pawn to h5, or walking the king out to g3/g4. Other than that, unless Black allows Nd2 without consequences, I didn't see much white could accomplish.

I'll look at it some more later.

? The only possible improvement I managed to spot was right at the end,
? where you played 30... Kd6. I think White's situation improved quite a
? bit when he was able to play Nd2 and trade off your strong c4 knight.

Maybe, but, on the other hand, surely I want to exchange his knight and leave a good knight v bad bishop position?

? The worst piece Black has right now is obviously the a7 rook, but I'm not
? sure yet what to do about it. Some ideas I have looked at are Raa8-d8,
? followed by Kc7 and maybe Ne7-f5 (pressure d4), Raa8 followed by h6 (open
? a kingside file, but this gets rid of white's weak f4 pawn, which is
? probably not a good trade), or Kc7-b6 followed by moving the a7 rook
? somewhere along the 7th (possibly d7 with similar plans as when it was on
? d8). I'm not sure any of those ideas is correct or enough to progress the
? position yet.

Yes, the rook is misplaced, and, in fact, most of Black's difficulties stem from not having any open files for his rooks. Perhaps we can find a way to open a file somewhere?

Other than that I regretted not having played ...h5 somewhere at the beginning of the endgame (move 24, say) to keep a hold on the kingside light squares and stop White gaining space there. Also, I don't know if playing ...c6 and ...b5 was such a good idea as it weakens my dark squares and obliges me to keep defending c6.

I finally got around to putting the answer online!