Help Rengar

Rengar was my favorite champion before the rework, now he is my least. Alerting enemies when he is ulting makes it almost useless. It was fun to startle people with his ult and have the element of surprise instead of just being untargetable. Before the rework Rengar was a champion that could have a large impact to the game. Having many trophies is not gratifying without the possibility of loosing them. Please make him fun again.