I mean, have you just tried setting BACK_BATTLER_SPRITE_SCALE to something lower than 1? I have no idea if it works, off the top of my head. Seems like you should at least have tried it first.
Fixed a bug that would cause a crash when viewing the Battler Info UI of a battler who is in the middle of a two-turn attack.
Overhauled the entirety of the effects list in the Battler Info UI. The description text for effects have also been improved to be more detailed or specific if possible...
Fixed a bug that could crash the game at the end of a battler's turn.
The ability Perish Body was previously overlooked when considering boss immunities to OHKO effects. This has now been fixed.
Tweaked and simplified the code related to boss immunities for all relevant moves and effects...