Imo. Gatling Guns / Machine Guns are a bit like an idea that looked good on paper but doesn't work that well in reality. I'm not quite sure why the developers didn't just make them range 2 like the previous ranged units, but instead they chose to give them a somewhat higher ranged power than they would normally have and a melee power to match their ranged power which should make them more durable in the melee attacks they will be subject to courtesy of their shorter range. This might look balanced on paper, but it sort of misses the mark on both sides: Without the range upgrade they are less useful than their contemporary melee units because of their lack of melee promotions; whereas with the range upgrade, they suddenly become overly powerful. I don't think they constitute a serious problem for game balance, but I think I'd just have prefered regular ranged units with range 2 and strength something like 28 for GG (20 melee) and 56 for MG (40 melee)