I think that the Starcraft II concept is the best for 0 ad in a KISS sense. No running, no marching. Only charging. When a unit is near to another, they should automatically charge (it should be able to turn off the autocast and to manually select targets) when a unit is near to a enemy in x space. So units would charge continuously in the mosh pit until stamina is drained. (just small cooldowns for the ability) BTW, for immersion sake, I think that units in fight mode should use run animations. There are some design decisions here: if stamina is used, we should think about an ability system, instead of hardecoring the features (camoflauge, charging, healing) make them working in a more dynamic and comprehensive way for modding (thinking about warcraft 3/starcraft 2 ability system). But I know, that it's easy to write, and the important is getting the things done, so that it's only a humble opinion.