The Shen changes on PBE are going to hurt him a ton while hardly moving his power away from pro play
The Q nerfs are going to remove one of the best things about Shen, his ability to farm under turret.
His E gets a SLIGHT buff in that its energy cost is going down and its width is increasing.
And then his ult changes. Sure, it takes away from offensive uses, but the shield strength isnt taking away from those uses because teams use it for the teleport, where Shen can come across the map on a mobile champ, not a stationary ward, so teams have less time to react and move away from the danger. The shield strength being lower unless the ally in hurt also take away from shens power, since sometimes you have to start the channel when you see the enemy about to dive, since you wont make it if you start the channel when your ally is already taking damage. And then you just slapped ANOTHER CD nerf on to it.
So, it total, you have a large Q nerf, a minor E buff, and large change/nerf to his ultimate. Its 20/30/40 seconds longer CD than live for his ult atm.
So, in an attempt to remove some of Shen's team play presence while retaining his ability to solo queue, you are just nerfing him almost across the board, and pro teams that pick him for a split-push tank with a global are STILL gonna pick him, since the ult change doesnt effect offensive plays at all, but makes defensive ones harder to pull off, since you have a weaker shield but still a 3 second channel.
I really hope that these changes don't go through, because if they do, Shen will be absolute garbage in solo queue.