Why isnt Jungle Shen played more?
He has very effective level 2-3 ganks (2 if you take taunt second)
Hes an extremely strong tank that's effective throughout the entire game
good clear time/ sustain your rarely below 1/2 health while farming
and you dont get punished for ulting... you dont have a turret to lose or a lane to be out cs'ed
seriously though he has good clear sustain tremendous global pressure (more so than he does in top lane imo) and great ganks