Keep Dynamic Queue - Don't go backwards
Lots of people on the boards continuously posting about dynamic queue woes. You did a good job Riot, it works well and has made the queue times for ranked faster while also making it easier to know what I am going to be playing (roughly). I don't have statistics on how many times I get queued with large teams or against them, but I feel it is pretty even on both sides the majority of the games I play.
Don't let these people on the boards make you feel like the changes you made weren't forward progression. The game looks, feels, and functions smoother and easier. That is forward progress and I commend you for doing it.