Aside from enemies being able to automatically get area of effect with their skills (because the AoE is tied to skills), there isn't anything special for enemies specifically right now.
There's a "large enemies" plugin in the works, where you get to specify that a monster takes up multiple tiles. Maybe it takes up 2x2 or 3x3 square, or it takes up the entire battlefield, or something. Could probably be generalized to actors as well.
I did a little "map battle" concept where I pulled events on the map straight into battle, and played around with the idea of "talking" to events. So like in fire emblem where you could interact with other characters, I was thinking maybe you could "talk" to an enemy and turn them to your side.
This could potentially be done for two-grid system as well, where you basically assign events to each enemy and then somehow trigger the events.