Just a stronger Phase Dragon? Let's all make stronger Horned Frogs and stronger Wyrms for a higher cost.
I'm sorry but in my eyes this is lackluster. There are really 2 main significant differences, higher stats and it not being airborne, and I'm not even sure about that. I just can't see it being used much
strategically.
Maybe it's just my personal taste, but I'd suggest that you give it some synergistic skill that can work with elements that don't already work best with Aether and continue getting suggestions.
Your will is good, just I don't know if this offers much to the current game, and aside, I don't know if a stronger Phase Dragon would move through the Crucible rankings easily either.
I hope I've helped.