Check out crystalkeep:
Crystal Keep - D&D and d20 System
They have an entire pdf containing feats from various sources, and a whole section dedicated to Shield Feats.
More precise: the PH2 and Complete Warrior contain several shield feats.
Are there any feats that make shields more worthwhile to use? I'm tired of every fighter using a two-handed weapon.
You all seem to be forgetting 1 problem - animated shiels.
So however good you houserule shields to be, the fighter can just apply them to his floating shield, and continue wielding 2-handed weapons with no drawback whatsoever.![]()