There needs to be a balance
I like playing all sorts of roles all the time, so when i go to draft and select "fill" i want more than to join a game in .5 seconds as a support. I don't want to be forced into a role but i also want to have a variety. Supp is my least favorite role and many others would agree, making it nearly impossible to choose "fill" and not be stuck with support. If there was a balance making it possible to get more roles out of "fill" or maybe make a support only item that makes the role fun and entertaining other than trolling as supp.
Another thing is bans. 3 bans each was nice when the game had much less champions but now that there's approx 130, 6 bans means nothing, people will just pick the next most broken champ atm. It gives you a chance to ban the totally broken champs but then there's champs that are a counter to you or your champ. There needs to be more inhibitors on picking powerful champs than just 3 bans each.