I didn't like the arc, but I am just glad it's not She-Hulk. That would spoil the character for good!
Although Jean wished her luck and told Wolverine to leave her alone, I do wonder if the other X-Men will go after her because of a delusion that the creature belongs to them, like Magneto, not to mention that Echo is a baseline human with an usual talent, which perhaps ends where they learn that the Phoenix belongs to no one. That it's been around long before the X-Men existed and will continue to exist long after they're gone, despite their beliefs that they're going to live forever. That perhaps not all it's hosts have been mutants as they seem to believe, just like they believe only mutants are evolved and not other mutated beings with powers like Franklin Reed who turned out to not be a mutant this whole time.
Echo, being a marshal artist, will perhaps be more discipline because she doesn't crave the power like most earth mutants would because of their culture where they have to be better then everyone in the universe and are sometimes careless about it.