That really sounds like some quantum physics stuff.

U2 had no backstory to tell, so ND were able to cut right to the chase. U4 has Nate’s brother, so they had to add additional chapters just to showcase the relationship between him and his brother. And I think it gets good from chapter 7 itself.

Wait.... Ana’s rifle does not require charge up like other snipers, can heal teammates, has less scope in time (with additional rate of fire with the latest patch), can do same damage scoped in or not and now you are asking for mobility for her?