Not everyone wants to play that way though. Yesterday I found myself on a team playing Citadel just that way: a stalker and a brute would rush through to the end of the map, ignoring anyone else, would have been nice if they had announced it as a speed run when recruiting. After dying a couple of times trying to keep up only to find they also hadn't done any clearing of the map along their way (Defenders have trouble when they walk into a large group of mods, often), I gave up and door sat. Hey, I still supported them, I was running my Leadership toggles, and that was more support than I was getting from them.
Have to admit I find speed runs boring as well, like why bother playing if all you're doing is rushing? Like I said, people play differently.