Originally Posted by Cipherthe3vil
which is still kinda much I see...
-full spell level?
The problem is, increasing the penalty hurts those who can't get that high charisma. For example, making it -full spell level means by level 20, if your sorcerer doesn't have 30 charisma, he can't cast a 9th level spell.
So I'm going to ask again: Why are you so desperate to make an alternative system for how many spell slots you get? I could understand if you were trying to make a more freeform system (ie cast each spell you know more times per day rather than sharing restriction across spell level, or a point based mana system), but if you're still keeping "You get this many spells of a given spell level" why not just stick with the normal spells per day chart? That way you get a decent amount of spells per day as a baseline, and it doesn't scale quite so ridiculously with stats to the point where you have a very small sweet spot where spells per day are where you want them.