Kha'Zix's R Evolved

I liked the previous version of Kha'Zix's R when you evolved it, giving him invisibility when he enters bushes.

I do understand how long ago that was changed, and I do understand that it was changed for a good reason. That was a very strong mechanic.

I was thinking though, .. could there be some other mechanic that is not so strong but does more than just giving him an additional charge?

I really like the idea of him gaining some added benefit from entering bushes. I was thinking it might be reasonable that he could halt the timer for losing invisibility if he enters a bush while invisible, or gains additional duration if he activates his invisibility while he is already in a bush. That still seems a little strong though.

Another idea that I had was to reduce the remaining cooldown of his R when he enters a unique bush (each bush would have a cooldown similar to how terrain have a cooldown for Talon). This would encourage him to roam around to bushes as he paths across the map, and would encourage him to use his R more frequently.

These are just some ideas I wanted to throw out. Let me know what you think