The only rules question I can't figure out so far:
Imagine a 2x2 unit. Imagine a hero (1x1) flanks them on the back side. Imagine that the hero kills both back trays. They are now not engaged (because both back trays of the 2x2 died, reducing it to a 2x1) and close in triggers. Close in lists as a shift 1 option. The question is, if she moves forward the heroes side would be touching the back of the 2x1. If she moves sideways, heroes front side would be touching the flank of the 2x1 unit. Are both of those legal close ins? Or neither? She doesn't actively collide into, because she isn't moving into the unit. She is sliding along the side of it.
If neither is a legal close in, the hero stays unengaged at that point.
Any thoughts?