The role selecting draft queue: A simple improvement.
I do like the whole choose your roles before entering queue thing. I've also seen people complain about it in both directions. People saying you should only be selecting one role, people who say it should just be pick order when you get in the lobby, etc.
A very simple way to make it better would be simply to not specify a number of roles you have to pick.
Sometimes we only want to play one specific role, and we should have that choice. Sometimes we have no preference (queue-ing fill). Sometimes we might want to play any role except a particular one or two. In that event, we should be able to queue into 3/4 of the 5 roles (essentially a limited version of queue-ing fill, but also with the ability to put them in an order if you are so inclined.
And of course you should always keep the separate queue where things are determined in the lobby (blind pick).
Of course there's also the issue that queueing fill is basically queueing support anyway, but that's it's own issue that I'm not addressing here. For the sake of this discussion the support issue can be ignored, as for what I'm saying it doesn't actually matter what the roles are.