How about a visual for Sion ult for deaf players?
One of the people I regularly play with is deaf, and I just realized it'd probably be a good idea to have some sort of tint on the screen whenever Sion ults. The loud scream is helpful, but if you can't hear it, you have no warning unless your teammates are aware enough to start pinging, which isn't necessarily true in solo que.
Nocturne has had it since the beginning, and Zilean got one recently, so why not Sion?