Reporting Options Post Game

I was kinda encouraged when the reporting options changed awhile ago to include some other behaviors. However, we lost some important ones as well, or maybe there were never really there. I recently had a game where the ADC went Rammus (yes, on purpose. wasn't a misclick). He then tells me he needs my help clearing lane, so i say ok as I am the support. However, what he really meant was he needed me to 1v2 most of the game while he roamed jg stealing all of jgs items and never really helping. He would help in team fights every once in awhile, never really wrote much in chat. we all begged him, (me, nicely; the others not so nicely) to please group up with the team and help in team fights. It was to no avail as he continued to roam randomly around jg. He would purposely go into out numbered fights in jungle but would refuse to group, work with the team or defend base. When i asked him what his strategy was behind it, he stated that Riot liked his game play since they gave him an S and that he was Honor 4 because all of the reports on his behavior would be thrown out because he did nothing wrong. However, from a "TEAM GAME" stand point, he made many mistakes and let his team down tremendously, I mean this isnt that other single player game where you build "Fort"s to shield yourself from enemies shooting you. This is League of Legends where you are supposed to work as a team in the role that was given to you or the role you chose. Therefore, I believe ones behavior in the game should be reportable and people should be banned and lose honor because of it. I mean seriously, we lose honor and get chat restricted for verbal self-defense, but Riot can't punish ones behavior in game. He legitimately believes that trolling his teammates was How he was supposed to play the game. It was in post game chat where he clearly states that Riot wants him to play that way. That is the culture Riot has created by not looking at specifics, like who started it and who is keeping it going. Not just blanket restricting or banning everyone involved. Some are truly victims and should not be treated like those who instigate on purpose. Please include negative behavior and lack of teamwork as a reportable offense.