Monster AI Upgrade patch

This is amazing.. however, the one command I'm still yearning for is the command to change the monsters sprite. Perhaps in different ways, such as fading in and out, flashing, or alternating between the two sprites for a few seconds until the new sprite takes affect. To me that is a gold mine of new monster AI designs. Using "call to formation" can sort of work, but it isn't seamless and the main sprite disappears before the new one takes it's place.