Here's a teaser of baldi's updated wave animation coming in Alpha 6. Sprite sheets will now be used for storing animation frames instead of each frame of an animation being a separate sprite. For example, instead of the animation for baldi's wave taking up 61 separate sprites, its now stored on 3 sprite sheets, which means it takes up a lot less space in the mod's files.
BaldiWaveSheet1
Baldi Wave Sheet 2
Baldi Wave Sheet 3