Bigger embraers for regional? I wouldn't hold your breath. Maybe a secondment from cityflyer.
I upgraded on the legacy recently and although I really like my job, I can't help thinking that if I had to look for another, the 145 rating would open very few doors. The worldwide corporate ops may help though.
For me in your place, I would bite the bullit and go for the airbus if you can make it work with your personal life.
Good luck
D and f