@Unikron: Huh, interesting. I always thought that the spritesheets were just visual organizers inside sprite collections. I figured if everything is being saved off to a single sprite atlas on the disk, then the individual spritesheets are still in the same sprite atlas file, retaining sprite batching. Does that mean if I have a sprite collection containing two spritesheets which is being used for a tilemap, that's going to break batching?
(If my question is going off topic, I can move it to a new post)