A320ECAM, with the mpl you will be forever on the right side, you cant be upgraded to captain nor apply for other company because the mpl is addapted to the company in which you are being instructed so... You can figure out why is the other way better than the mpl.
Wrong. The days of it being 'airline specific' have gone.
1500 hours = ATPL.
Minimum hours for command is 3500 factored. By then any MPL cadet will have a full ATPL and will, of course, be able to upgrade. Why would any airline recruit people who will only sit in the RHS? You are all being recruited as future captains.
Also, MPL pilots with only 500 hours have moved from easyJet to BA. It is NOT airline specific. The airline simply needs to add MPL as an accepted licence type into their OMs.