Some suggested changes for convenience

I think it'd be nice to have a green circle appear next to the health bars above allied champions if their ult is ready so you don't have to look down and it would be a great help in one for all.

Secondly, I think that in the tab menu you should be able to see what buffs people have. For enemies this would update whenever you see them. It would just be convenient to be able to quick check who still has baron buff for instance.