It should be a reportable offense/ Idea for ranked
There are 2 parts to this, one of them is a bit of a rant
First of all League NEEDS to make an option in client to report people outside of after a game. Sometimes you get people who are so toxic in champion select that you dodge just to get the hell away from that. Why is there no option other than going on the forums or emailing riot and feeling like a huge asshole? Now on to the real part of #1 I believe it should be reportable if you ban a champion that someone had selected as wanting to play. This is just being a rude jerk and sometimes it actually can put people on tilt. I just dodged a game because my jungler was being a rude toxic jerk and was flaming people for not banning a champion that our mid laner wanted, and also for banning the champ I had declared because he didnt feel like jungling and we wouldnt switch. This is toxic behavior that puts people on tilt before a game even starts, but riot allows this. Some people say that they didn't see that someone had declared it, but I think that could be even worse. This simply means they are not paying attention, or simply dont give a crap what their teammates want to do with their game and so just do whatever they want, nice team mechanics riot.
#2 I believe that in ranked ques you should have to have a certain # of games played on a champion on that account before you can play it in ranked. Ranked is not a place for trying new things, it dosnt matter if you are plat, challeneger, silver, or bronze. You trying a new champ means that you have no knowledge of how it works and you are screwing your teammates over. Once again, nice teamwork riot.