when 1 green imp fights 1 blue imp then green keeper will drop his entire army to kill that 1 imp which will result in blue keeper dropping his entire army as well. this will result in losing all units then slowly suiciding his low hp high level creatures never allowing them to heal up.
on top of it both keepers will cast call to arms that lingers on way longer than necessary so much so that when any of the two keepers try to drop creatures in training/research etc those creatures will leave the rooms and get attracted by call to arms and even gonna die doing it
proposing the following changes:
For the CTA issue see #483
I'll edit your title so that this issue is about your suggestions for creature management in fights.
@Loobinex Thank you
I remember that in original DK if your imps are fighting enemy keeper imps he do not drop whole army to kill them. He usually kills your imps with lightning. But if his creature(non-imp) sees your creature he drops army(sometimes i abused that to do stuff like digging from enemy keeper dungeon to the heroes etc