I have no problem with theme PCs.
Yes, you do, you just said so.
It's just as easy to use cold spells against the fire creatures, and fire spells against the cold creatures, and your chances of hitting into the wheelhouse of their vulnerability is even greater.
Without spending a feat.
I never understood the concept of gimping your PC for a thematic reason.
Again, there are plenty of completely valid role-playing or world building reasons why any given character might be limited mostly or entirely to a particular element, such as the Dark Sun elemental Clerics or Rokugani Shugenja.
Such characters are severly handicapped (I.E. do half damage) against a range of foes. No one likes to suddenly be sucking wind because your pyromancer is useless in a volcano dungeon against Azer, Salamanders, Red Dragons, Fire Elementals, etc etc.
The feat removes a situational penalty, meaning the themed character is now on a level playing field with the generic wizard.
So by your definition, if people think that the feat pretty much sucks, even for theme PCs, then those people must be mocking those players.
I just think that gimping your PC with a lousy feat is dumb, for any PC.
No actually what I said was that the system was mocking players who wanted themed characters by forcing them to either break theme or be gimped in numerous encounters. This feat does not give tremendous cosmic power, it fixes a flaw that naturally accompanies specialization.
I mean, really if you have campagin centered around a Black-Dragon blooded sorcerer trying to defeat his Great-Great-Great Grandfather and his forces doesn't it kind of suck that they resist the bulk of his powers?
Yes, it's not as good overall as +2 to your primary casting stat? So what? Stats boosts come quickly and there is a hard cap at 20. Once the Pryomancer and the Generic Wizard are both at 20 Int then the Pyromancer is strictly (if slightly) superior with fire spells and (more importantly) not crippled against foes who match his theme. How exactly is he gimped?