Hmm it's coming a little close to cliche territory but I'll wait and see. I think Lee is a chinese surname though :P

EDIT: More versatility in weapons would be better yeah. So her phasing is like blink in Dishonored? Any kind of time travel is too OP, at least in this stage of the story. And it makes as little sense as it did in Days of Future Past xD 

I've had a suggestion for power levels and I'll post it here for your thoughts.

Strength classes
Human
Olympian
1 ton 
5 ton
10 ton
50 ton

And speed classes
Human
Olympian
50 mph
100 mph
Mach 1
Mach 5

Or something in that ballpark. I might work up a general Power Tier system later, but maybe not.