Maybe. I thought about it. There is a few twist I can do, but I think at least starting out, it will just being the MC doing it. I can see them buying extra emotes for their monsters to maximise the effect of the monster interacting with each other and environment.
That is a good idea, but a different good idea. I think part of the charm of for the first draft of the idea is that because of the limitations and how the mc works around them to make their own fun.
You have brought back up my wish to do something MH esque. Maybe another day .