This seems semi related, but I think it would be nice if the mobs actually did something instead of just roaming around. A example would be the Antlings. I was thinking if they came out of a nest in the ground and walked in lines like real ants, to a certain point as if gathering food. Or even more simple if the goats and stuff were grazing or something more natural. I guess my point is it seems weird when they just stand around. Though I wouldn't know how to do this with all mobs, as I'm not sure what a bomb would be doing casually.