I've decided (I'm the DM) to test out a new spell point (mana) system, but I need some help creating it. I got the idea from unearthed arcana, but since it's 3.0 (which I do not have access to) and we're player 3.5 I thought that this would be the ideal place to get some help. No restrictions, but it'll have to be relatively balanced (300 fireballs for a level 20 wizard would not be balanced) and I need formulaes for the core classes (sorcerer got more spells than wizards, so they probably have more mana) etc.
I had in mind to follow the generals in the expanded psionics handbook, but keep the standard scaling for spells (no 5d6 fireballs for level 20 wizards....), just the pure costs for each spell. I'm open to other suggestions, or use an existing alternate system. If it matters, I'm using the 8 hour sleep=ready for action.
Thanks for your attention!