Add ability to redirect healers
Healers often don't go the way that makes sense - or at least not the way that makes sense to the attacker - how about adding a feature that allows redirecting a healer. Programming healers with foolproof AI must be a tough job - but if we had a way to let's say flick a healer (or cluster of healers) in the desired direction after it has been deployed and is not going the right way, should allow to give the AI a little help. It would seem reasonable allow redirecting a healer only once if that would simplify the user interface ...