This is the one thing that Riot SHOULD admit they messed up on and roll back
The answer is always Karthus
No really though guys n gals season 6
Roll back to the end of season 5 Start Over after LCS or whatever
Just don't use anything from season 6
Instead of continuing next season close to season 6 just go back to the end of season 5 and try again.
And it's not just the ADC full comps and lack of builds/champions and overall gameplay
Listen I like new champ select but I WOULD RATHER HAVE SOLO Q THAN NEW CHAMP SELeCT (although both is preferred)
Thanks for reading yo
Peace out