Tahm Kench "The River King" Gets Beaten Up By Red Buff
Jungle is Kench's weakest role atm and this seems so shocking given his whole theme and lore. He either needs a bit better clears or a slightly higher MS for stronger ganks since he has no gap closer. The 2nd is risky since that could buff his other roles. The first is simple and fairly safe. Just let his passive stacking work vs jungle monsters too. Alternatively, his W damage vs monsters can cap out at higher amounts. Anyway, I think it's pretty easy to make JG Kench more viable without giving him too much power in the other roles.
EDIT: I see that many champions capable of jungling, such as Malphite, got a 15% AS buff to compensate for the rune changes. Tahm got only an armor buff and that's why his clear is much worse than before relative to other junglers (not to say that it was ever good). I guess Tahm jungle wasn't even considered. This is strange to me because upon release, his best role was jungle and many people enjoyed it.