Which is part of the reason I have a hard time myself in ranked, or draft for that matter with the current system reason I am suspended is because of forced role and trying to play the role with players who want to rush out attacking minions constantly when playing in a bot lane after its said at champion selecting playing defense on tower, and they get killed, or I get killed and then feed happens because they go all in offensively when playing a defense comp.
There is also honestly more to the game than winning your own lane, there are tactics, and team play as well as helping your allies who are having problems when and if possible.
But to answer the two concerns
1.) http://na.leagueoflegends.com/en/site/2016-season-update/ The new champion selection will be awesome and will greatly improve match-making its still possible to be toxic and troll nothing will stop this, but Riot needs to put in a new report option and deal with players who do this.
2.) What the game will not enforce just because of role is meta, for example me going Darius, bot lane, or me going Akali, or Kat for jungle, or Teemo for that mater, I don't really see teemo as a good jungle champion but who knows I haven't tried it myself to know if its great or not but I have opinions regarding the play types of these champions and alternate play that should be done.
3.) The verbal abuse is insane, its the reason when I was playing the last few days I had to mute / ignore everyone the moment I thought an argument was going to start because its insane, I had players wishing cancer and stuff in chat when I unmute 15 or so into the game the amount of toxicity is insane at times.
For example a common mistake in my opinion I see a lot, you get a First pick
on the enemy team, and your team counter picks
which is okay, but the problem here is if you have vayne top you do not need an adc bot lane, and while most people play
as a Top, or Mid, I personally see him better fit as a bot lane champion, and could say the same thing about
being played bot lane, so instead of having a second ADC like most people there should be another tactic played for bot lane which in turn if done properly would easily put your team ahead and shut down the enemy team for example
+
is just one example not saying its the best combo but if played correctly or a APC bot lane instead would really spice the game up and equal a win.
The problem with taking
or
as a jungle is the fact they are easily countered too hard, and if your team screws up doesn't leash like in some of the games I played and you fall behind on farm, or the enemy counter jungles with a champion it can be really hard to deal with, however on the other hand if you have a experienced team this is how I boosted myself up to Silver in 2014 was playing off meta jungles and decent matches, and Top/Mid roles.
Which leads to my biggest issue of encountering toxicity in game its hard to find players who are familiar with off meta, and even though the new system will help with a lot of the role stealing things are players who go afk after choosing a champion there are things it won't resolve like off meta picks, players getting upset over it and so on which is personally why I would pick to be a solo player except for when I duo.