I'm not a developer, but I was trained as an animator. Remember that 2k doesn't really exist. It's all an illusion. So all of the things that happen in real life, like transitions from one animation to another, aren't governed by an overall physics system like in the real world. Every time a player does a new action, it has to be integrated without blowing up the whole game.
This isn't easy. I think every game either makes great compromises in this area, or has very simple animations to begin with.
This is without even considering that these actions and transitions between actions also have to be integrated into the ratings system, collision actions and whatever governs cause/effect for size differential.
I'm not defending 2k. This is a criticism thread, but hopefully explaining the challenges will help us lead 2k to very specific problems so they can find the solutions that can work within the systems they have already created. We can ask them to remodel the house. We can even ask them to add a shed to the house, or knock down the wall for a closet.
If we ask for a new house, it ain't happening and we ain't helping.