Minions here has colision, just like in D2 (unless when you clump then with teleport/enigma).
Colision is the major problem to have a command buttons, as i said in other topics.
To me, it will cause more problems than solve, because if you command your army to atack specific mobs, some of then will just run around doing nothing, trying to reach your target non stop.
In D3, skeletons dont had colision on skill…