At some point it's not really possible to climb without abusing meta, right? When does that point really start, generally? I'm playing Shaco jungle mostly, not something super weird.
And before the flame, I'm not trying to pretend i'm better than I am, I'm just wondering at what point getting better at what I do isn't good enough.
people one trick to challenger and rank1 so no limit except maybe CS and LCS
you go to challanger one tricking, the problem is if your using super meta champs like cho jg you will never get them, to be professional you need to be good with everyone basically, but challangers mainly are just hard core one tricks
LCS
When pick order was a thing, but in all honesty the more mobility/utility the one trick plays the less of a counter you have to beating it where the only threats are skill match ups. 
rip 
trying to exist.
This question is really difficult. Occasionally there are otps in challenger. But the question of how long otp is good is very dependant on the meta. If you otp the absolute meta champion (and otp it for more than just the patch the champ got buffed), counter pick will probably not matter that much.
LC$
i think u can climb up to challenger one tricking any champion, after that u need to play meta champions if u want to climb more
Challenger
