I actually don't mind the wait times, but a sure fix would be to be able to launch a mission with only 2 or 3 players.
I assume the wait times will be fixed upon release anyway, when matchmaking will be handling more players.
I have 2 friends who play this game with me, and not being able to launch mission with just them seriously blows; and the 4th random guy _ALWAYS_ ends up being the host with 400 ping.
So my suggestions are the following:
Be able to launch game with 2/3 players.
Set a ping restriction for matchmaking.
(Also nerf Konstantine pvp, jesus h christ. he 1-shots close range)