I think shen is a very interesting character. I do understand he's had many balance issues in the past, but I was thinking of a way to make his gameplay a bit more interesting and fun. By changing his scaling to AD instead of ap, it would give him a pretty decent buff, opening up more options in his gameplay, opposed to having to consistently build health. I was also thinking about removing his ult as a global, while also giving him the capacity to ult himself to give him a stronger lvl 6 presence in lane. A faster ult for team fights at the same range as zeds ult, and perhaps adding some utility to the ult would make his overall game play pretty bad ass. A counter engage combined with the ability to truly punish people who show a lack of respect for his faster ult in team fights would be amazing. Also on hit effects for hit q would be pretty cool too, like a botrk trinity force shen opposed to having to always build health, it would definately open up avenues for this char without giving him the same global pressure.