A few of the weaker feats/feat themes that I really like:
  • Reserve feats are awesome, I especially like Summon Elemental Reserve - it's not bad but really just good for mainly non-combat situations
  • 'Vile' feats from BoVD and Elder Evils are really neat, I love Insane Defiance
  • Elusive Target always seemed like a nifty way to use Dodge
  • Poison Spell! Very cool, thematic ability, but surprisingly hard to use (you need to be casting touch spells and also have poison immunity & lots of poisons...)
  • Fey Heritage feat line
  • Luck feats from Complete Scoundrel - I once made a diviner who went full luck feats with the Unlock spell as her main attack, it was...not great. The Witch in PF ended up being able to pull off the diceroll buff/debuffer concept much better :P
  • Draconic Aura feat - cool idea, not usually worthwhile