Quote Originally Posted by RemVye View Post
As an added bonus it would be beneficial if all of the MP costs on your spells, on the UI, were reduced by 1/2 when you activate Parsimony.
As much as I love the idea and have had times when I wished Parsimony worked this way, I suspect this is the reason why SE won't do it because Parsimony only cuts the MP costs on offensive spells as opposed to all spells like you've incorrectly pointed out here.

I also suspect the user interface, due to how it's structured (blame the original developers for this, though, not Yoshi-P and the current team) isn't flexible enough to accommodate such changes, especially so if it's restricted to offensive spells only compared to all spells.