What are the different ways to fix PA/MA/SP Save?

[Pickle Girl Fanboy]

I'm curious.

There's the following, which I think is Xif's:
A Save boosts PA by 1, and reduces MA by 1, until you have no more MA, after which it doesn't work.
MA Save boosts MA by 1, and reduces PA by 1, until you have no more MA, after which it doesn't work.
Speed Save gives a bonus to CT.

There's this thing I just thought up:
a save costs hp
ma save costs mp
speed save costs ct
So:
A save reduces your HP by 1/8.
MA Save reduces your MP by 1/8
Speed Save reduces your CT to 1/2 it's current value. (?)

There's the stat boost cap hack.

There's my own impossible-to-implement idea of giving stat bonuses decay timers.  (Which still could be implemented, in a half-assed way, if you give up 3 status effects.  I think so.  Maybe.  Probably not.)

Are there any other ways to fix these three, that people have used?  How would you fix them?