Exactly, that's always bothered me too. I like your solution but it seems like kind of a lot of math. You could simplify the math if you just took the spell level right out (which makes Heighten spell completely worthless of course):
d20 + 1/2 caster level + stat mod
Effectively every spell would have the same save as your best spells in the regular system. That means that, for example, Charm Person stays useful.
Actually, it would get progressively more powerful as creatures with bad Will saves fall farther and farther behind your save DC. Hmm...Probably why it's not done like that.
d20 + 1/2 caster level + stat mod
Effectively every spell would have the same save as your best spells in the regular system. That means that, for example, Charm Person stays useful.
Actually, it would get progressively more powerful as creatures with bad Will saves fall farther and farther behind your save DC. Hmm...Probably why it's not done like that.
