Some ideas to help gnar out

I've been playing a lot of Gnar lately and I've noticed he can use a little bit of help on his e ability. It's great for escapes and everything but what if it also had a bit of an invulnerable or untargetable effect as well while he's mid jump. I'm suggesting this because I've been in many situations where I've tried to escape but an auto attack has killed me as I've used my e to escape. As well as when I tried to e on a champion in order to get my w passive to proc to finish them off, but they stunned me while I was in mid air. Just my thoughts on a small buff for him.