Shen is boring to play as and against
I mean just admit it riot. When Shen is ingame, everyone plays pretty passively. His abilities other than his ult and probably shadow dash is just uninteresting. He just needs a rework. Make his shield scale off health or something but lower the base values to make it bearable early game. And add something like while his shield is up, something something happens. Maybe rework his q to more of an Aoe 180 slash or something instead of a targeted poke. Please Riot, just give this guy some love. He's boring to play.
But that's maybe cause i like passive games