I don't know shit about Panth jungle to judge if it's needed to nerf him. So you guys tell me if it's needed or not.
He'll still have his strong dueling potential early game and lots of early game damage. The stun reduction will impact him but not so much. He'll still get ganks off ok.
The ult nerf is HUGE. Changes his dynamic immensely. Used to be able to jungle while keeping an eye on a lane and counter gank like a boss. Now it'll be more Nocturne style where you have to plan your ganks in advance and be right there.