Draft Pick Role Selection Changes

I think that you should be able to select more than two positions when queuing in draft mode. Lets say I want to play mid as my primary, but if I don't get mid I'm ok with going either jungle or top lane. This would definitely speed up queue times and give players more of a choice instead of only giving them two choices. I think that there should be 1 primary, and 1-3 secondary picks (4 would make it fill). Fill is an option, but what if I don't want to play adc or support? I think this would just be an overall benefit to the game, but it may take a little tweaking of the matchmaking algorithm.