I believe the first Post Merger New Hire was hired in 2012/2013.. someone else might know for sure.

This bid will not see a Capt Upgrade PMNH. Could there be another bid or two before the summer, maybe (but probably not). Will there be some bids sometime in the summer for Fall/Winter, probably.

My bet would be that you see PMNH getting on the snapshot sometime in 2019.. but not sure it will last for the final award.
Now, if/when the company announces the order for the E2-190/195's.. all bets are off.
THEN you will see PMNH's making Capt on that as almost no Legacy Pilot will (probably) bid that and take a pay cut from WideBody FO on 12th yr pay.

Don't mean to burst anyone's bubble but the reality is-
2 to 3 years ago I had new hire IRO's saying they were told they would be Captains in 2 years! I laughed. Told them I had been here 7 years and didn't think I'd be Capt in 2-3 years.
All it took was SK deferring our 73 orders!
I live local in EWR and can't hold Capt on either the 73 or Airbus here in EWR~ Been here 10 years.

Motch