S
Sunseeker
Guest
Don't forget that PCs aren't the only characters that use them. Many feats may be too weak for a PC, but just right for an NPC.
But that's really not true in 3.X systems. If a feat sucked, it generally sucked across the board. NPCs were built exactly like characters, and only gained feats that may be good but players didn't have access to because they had certain monstrous features. The thematic quality of a feat is a different measure and lots of statistically bad feats are thematically good for both players and NPCs.
Generally speaking however, bad feats were bad because another feat did the same thing, but better.
I agree with dbm, NPCs and monsters shouldn't use character-building rules. It's too much work for something that will likely last less than a few minutes.