It gets hard to keep medics behind stronger units like chronites because medics are faster and you have to like juggle the medics behind your chronites. Same with snipers. I think if you added like a 'follow' feature to drag and select some units, or double click for all then drag click or click one unit to have them follow. the downside though is with the follow, should they follow close, far, what? close has advantages for something like snipers and hovertanks and far has an advantage for like romans and snipers or medics and whatever so the medics arent hit by splash. but if you add a follow feature.. idk maybe use a hotkey, like Ctrl or something where you drag select one group or double click to select all then hold ctrl and click on one unit for drag for following the group, or double click to have them follow all (but follow the frontmost) would help.
Its a different type of server that Krin is trying to use for Colony. Right now, beatrix and glastondale are the old style, while the new Jetzul server uses smartfox. From what Krin said, it has the potential for a lot more stuff to be added since it has much higher capacity and such, but he's still mostly just testing it out right now. Eventually it could have things like friends lists and even clans or who knows what.