Clearly, this is an AU story. ;)
We have Jackson well-adjusted and coping. Well, even in an AU Aaron is bad-tempered. I guess his sour personality is the glue that holds all universes together, like some cosmic lynch-pin.
Your story has a breathless quality about it, at times there's a lot of plot and exposition to take in. Even so, it's an interesting what-if scenario.
Welcome to the boards!