I'm not sure if I should ask for a new feature before existing features are debugged, but I'll toss this out while I'm thinking about it.

This game REALLY needs an "Attack Area" feature. Most especially for the artillery, but for many or even all ranged units. It wouldn't be out of character at all to tell a team to create a beaten zone without having to designate any particular unit. This stands out most with mortars, then artillery, then archers. For example, when I'm defending a bridge, i shouldn't have to tell my artillery to fire on a particular unit. I shouldn't have them moving to pursue when it routes. And fire at will just isn't ideal for this, especially when there are units between. I should be able to tell my ranged units to just focus on hammering one part of the bridge... it's what most commanders would have done.