2D Animated Leaders?

[TyrannusRex]

I'd love it if a skilled animator and/or modder could figure out if it's possible to have two-dimensional, yet animated, leaders on the diplomacy screen. If it's not possible to have a 2D image animated within the engine, or a very, very thin 3D model (see: Mr. Game & Watch), then perhaps it would be possible to trigger voice acting on a 2D leader and have them switch between friendly, neutral, and unfriendly images?
I'm determined to figure this out; animation and voice acting are super nice, but CG animation is hard!