Minor nitpick, but greater plane shift is non-core, neither is sculpt spell.
I ignored the feat outright (the effect can be obtained from the Archmage class, which will have been available for a few levels at that level). But thank you for point out Greater Plane Shift.
"Suck" compared to what exactly if I may ask? Loremaster and Archmage are boh fullcaster Prcs that grant extra abilities to your core caster with quite easy entry requirements. So now even fullcasting with extras "sucks"?
Power attack is key for pretty much every melee build out there, including the monsters themselves. Leadership may be argued to be the strongest feat ever printed. Metamagic and item creation feats are a key part of caster's power. Natural Spell has been there since 3.5.
That's just it: Almost all of the feats suck, just in different ways. Some feats are horribly underpowered, others are utterly vital. Feats like Power Attack shouldn't be feats because of how ubiquitous it is to an entire concept, and feats like Leadership just plain shouldn't exist because of how badly it can mess with campaign dynamics.
My personal opinion is that there is only one well-balanced feat in Core: Improved Initiative. Everyone can use it, but no one needs it to survive (well, at least until Rocket Tag happens).
