maybe i will be rude, then forgive me, but all i read is:
- give us more space in a team as DD!!
- We want to instant queue as DD!!

you simply forget the most important point, most people want to play DD! other game have try to get ride of the trinity (tank, heal,dd) and it didn't work well sorry to say it.
you want to increase the group size, ignoring that will ask a whole rework of the game balance and gameplay.

when i play my monk, and queue alone as monk, i know that it will take me a loooong time for get into a group... why? because my role is overplayed. want less waiting time as DD? find a tank and become him friend! stop to play alone in your side. sorry but nothing that was proposed here is realistic and simply a rant from player that don't want to accept that DD can't get faster queue... simply because is not possible!