Any chance to drop the mana minigame when facing Erasers and just have it cost a straight 50 MP to cast Fireball and be one and done until they respawn?
As it is, even with 100 MP you are limited to only one fight, plus I recently saw an issue on Android where the tapping isn't responding as quick which results in MP draining completely before you can fill the bar. I did not notice this before in older builds. Plus, it's a bit on the annoying side of things, and not really a minigame.
Edit to add: Also getting the split character screens depicted below on latest build 0.6.5.