[wclass___]

1♣ is 16+ except 19-20 bal; 1♦ is 0-7.

Here is the backbone of the structure:

1♥ = any 5♥+ or 4♥4♠; or 5m4♥0-2♠ that doesn't want to bid NT
............ 1♠ = 4♠+ forcing
............ ............ 1N = artificial forcing; 3♠ or very strong hand
............ ............ 2♣ = 5♥332♠ or 4♣+ unbal NF
............ ............ 2♦ = 4♦+ unbal NF
............ ............ 2♥ = 6♥ 0-2♠ NF
............ ............ 2♠ = 4♠ not much action
............ 1N = semiforcing 0-3♠; 3♥ possible with very weak hand only.
............ 2♣ = 6/7HCP, 0-3♠, 0-2 ♥.
............ 2♦ = good 3+♥ raise 5+/7 HCP
............ 2♥ weak ♥ raise, but not any trash with just 3♠

1♠ = 5♠ F1
............1N like a forcing notrump
............ 2♣ 5/7HCP hand with 5♣+
............ 2♦ 5♥+ like 5/7HCP
............ 2♥ good ♠ raise
............ 2♠ weak ♠ raise, but not any trash with just 3♠

1N = bal 16-18 can be 5m4x or 6m etc, if appropriate hand. Can't have 4♥4♠

2♣ = 4♠3♥ or 4♥3♠ 5-1 or 6-0 in minors, forcing.
............ 2♦ asking, at lest on one 4cM.
............ ............ 2♥ = 4♥3♠ less than GF
............ ............ 2♠ = 4♠3♥ less than GF
............ 2♥ = weak hand, less than invite 5♥+
............ 2♠ = weak hand, less than invite 5♠+
............ 2N = weak hand, forcing, aims to play in partners 5m+ or some strong hands with sgl in M and minor fits.
............ 3♣ = invitational assuming opener has ♣, passable.

2♦ = 5m+4♠0-2♥ forcing. Too good/shapely for 1NT
............ 2♥ = NF somewhat decent hand 6♥+
............ 2♠ = NF less than invite
............ 2N = asks which minor
............ 3♣ = 6♣+ (or possibly 5♣2♦ !?) around 5 points, passable.

2♥ = 5♣+ unbal no 4M, too strong or shapely for 1NT, forcing.
2♠ = 5♦+ unbal no 4M, too strong or shapely for 1NT, forcing.
2NT = 21/23 no 4♥ unless 4333
3♣ = 5♣+ 5♦+ suit oriented, NF.
3♦ = 6♦+ 4♣ very good hand, NF.
3♥ = 5♣+ 5♦+ GF.
3♠ = 6♦4♣ GF.
3N = nat

How good/bad, playable/unplayable do you think this is?

[rbforster]

Seems fine. Nothing seems obviously problematic.

[mattias]

I don't see what you bid with 21-23 bal and 4432 with 4♥ and fewer than 4♠.