New matchmaking feature?

I like fill but most of the time you are only going to get one role. Ive been playing fill a lot recently and have only got jungle. While I didnt mind it at first, jungles been repeatedly the least favorite role for a while and it is my most common fill or autofill role. I would like a button that tells the system a lane that you just absolutely do not want to play. If that increases the time of my queue im ok with that because me, and a lot of other people have roles they just dont want to even go near.