i would quite like to have option "shared control" enabled, probably would have to be all munition cost abilities, buildings and reinforce disabled to avoid one or the other bs, that actually would be sweet!
simple solution would be just increase the time sniper stays uncloaked/cant move after the shot and/or increase reload time between the shots, messing with attack move is silly
i dont think mirror matches are that bad, it gives you more different gameplays in team games, i tried it in alpha and its not the big deal, sure its not historicly acurate but the gameplay is epic