Low impact of ad carries on the game
I mean I am pretty sure this is one of the hottest topics in league and to be honest there's a reason behind. Let's say you're playing a game as Jhin, everything's cool you know... you pick up some kills in lane and you end up something like 4/0/2 in lane. Mid game starts, and so do teamfights, you're lvl 11 let's say... the thing you didn't notice is the enemy has a riven top who has the same score as you 4/0/2 but is lvl 14... both of you are on the same skill level, still he has a much bigger chance to win the game than you as the 3 lvl advantage he has is too impactful in the teamfights you have and you end up losing the game. The problem was, besides your summoners (flash/heal usually) you didn't have any kind of self protection and you had to rely too much on your team (and positioning which is sometimes a non-factor as a 45% cdr riven with all her gap closers can easily get to you most of the time regardless of your position).
I was constantly thinking about it lately and wanted to share an idea with you (maybe stupid, maybe not, that's why I want some opinions on this topic). I believe if ad carries could get a buff which wouldn't affect laning much so they could be more viable in teamfights, the role would have its meaning back. So the idea is to make ad carries at their laning phase to NOT share experience with their support (something like the mordekaiser passive I think?) so there wouldn't be a 3-4 level difference between the ad carry and the mid/jungle/top laner, so he wouldn't die that easily to them. If however their damage would be too high, they could lower each ad carry's AD per level. Thoughts ? :)
Sorry if there are any mistakes in the text, English is not my native language, so if you find any let me know :)