Rod of Ages and Cho'gath indicator update

Just spit balling a couple of ideas here to see what people think about them. Honestly I don't see them implemented any time soon, if at all, but never hurts to try.

My first idea, which I'm sure others have had as well for Rod of Ages, which would be to have a 'cooldown' timer on the icon to display how long until the next stack. Now, this would only be seen by the player who bought RoA in the first place, but it gives an idea of when the next amount of ap and hp will stack and let you gauge your next action. Like I said, it would be a small improvement, but I feel like it should be implemented at some point though.

For Cho'gath, I feel like his indicator on his ult for the execution is less noticeable than it should be. Currently it's a red ring with teeth around it that circle the champ when you can eat them. I feel like there should be more of a 'Hey, this champ is low enough to be eaten by this void monster.' type or indicator, rather than a subtle visual. New players, and people that hardly play Cho'gath won't really know that it's there for a bit, where as if you did something like with Kha'zix isolation, or even Garen's villan passive SFX, then more people can play and play against Cho'gath a bit better.

This being said, I know I'm a low elo player, but I feel like these changes would help gameplay just a bit more.