Idea for indicator for allied Ryze "Realm Warp"

i had an idea, what if when a allied uses ulti you get to see a location on the map as to where it is going to end up. (like a ping or something) as well as an slight arrow indicator the actual ulti itself so when looking at it you get a general direction.

obviously nothing would change in the opponents view.

but this would allow us teammates of to help decide whether stepping in his realm warp is a good or bad idea.