Removing X ability score minimum to cast spells

[Burn_Boy]

It makes a huge amount of sense that higher level wizard spells are more complicated and require higher intelligence to understand.

That kinda hits the nail on the head if you ask me. Wizards and such need that kind of high Intelligence to figure out the subtle nuances of casting the big spells that tell the laws pf psychics to sit down and shut up.

In the case of Sorcerers and other classes that spontaneously cast I look at it the same way. Sorcerers use Charisma, their force of personality to cast and without the ability to make everyone stop and look when you enter a room, you're not going to put psychics in the naughty corner until the grown ups are done talking.

 

[Xakk]

Not necessarily. Casters have always been the cheesebearers, there are ways to get spells out of your level. Further, even allowing access to lower level spells also allows access to PrCs with spell like class abilities stepping somewhat out of the spell progression. We don't want a Warrior/Caster/Pokemaster using his leftover Attack Bonus on his Touch Attack pokes 4/day.
Cheesemunchers have enough ammo without being allowed to make a Warrior Caster cocktail.

Also, warriors do get a damage increase as they level, in the form of...more attacks. How's about double your output? Triple, quadruple in the end, not to mention extra attacks tacked on during his career from feats or gear.
Casters only get one extra ever unless they dip into warrior, which impedes their spellcasting, keeping them from attaining all the high level spells they could and wasting that high key ability score we're discussing.

Ever notice on splatty classes with both spellcasting and fighting they trim the spell progression list manually? They don't even want characters with both high casting scores and fighting scores to advance as fast as a wizard. There's an economy here.