Rengar Ultimate Fix

I've been playing Rengar lately, and I've been having problems with one thing. Whenever I ult my target always immediately backs off before I can even get close enough to leap on them. And I know this is because of that warning that appears above their head when I ult. It's already bad enough that Rengar is not NEARLY as good as he used to be with his Q being changed and his ult giving him "Camouflage" rather than Stealth like it was before. The warning on my ult above my target's head makes Rengar way too predictable. The original reason they gave Rengar that warning was when he was able to almost always one shot targets because they had no idea he was coming before his rework. But now he has less one shot potential than he used to and the warning is way more obvious than the original small ! that appeared next to your character when Rengar was ulting nearby. With Rengar being weaker than he used to be and the ult warning being super obvious, Rengar's ult is almost worthless. I know that they won't ever change Rengar back to the way he was (when was actually good), but the only thing that I think they should really change at the moment is removing that ult warning. I doubt it will be too much of an issue considering everything that I mentioned before, and the fact that people rarely play Rengar anymore. Tell me your thoughts on this in the poll and comments.