It would be nice if joining a quick play match required the level to already have started loading. Often if I quickplay solo I get dumped into the keep where people are not even ready to start the map.
When hosting having someone join holds up the team from starting the level, so we have to wait for them to load in before we can load the level.
It seems like all parties would be better off by having loading times reduced and active time increased, if quickplay only matched people into games that already started.