A fix to Ryze's ultimate
So as we know, and as Riot is finally admitting while making changes that don't actually address it, Ryze is incredibly bad for around 99% of players. And this isn't a matter of player skill. Ryze isn't mechanically difficult, so the trend in his performance can't be explained by a "high skillcap." If you really want to nerf Ryze for professional play, he needs to be the only one capable of traveling with his ultimate.
Barring another rework to change the ability, that's what I propose is the best option. The fact his allies and minions can travel with him is a huge aspect of what makes him overpowered with a drilled, coordinated team when he isn't good for the vast majority of players, so removing it would fix that issue while allowing room to have some of his nerfs reverted.
I know that means it'd basically just be a weak TF ult with no vision, but if that's the price we have to pay for pros to stop abusing him and undo all the nerfs to his basic abilities, I think it's worth it.