More in the pocket of a 737 F/O - i dont think so. A higher hourly rate doesnt compare with MDC of 5hrs 30 (active/passive) or the credits for the trips they do. S/H can do a 12 hour day and get paid 2 hours 55! Utter crap. I would rather take a lower hourly pay and get paid more hours.
As for roster disruption, the old 734s are starting to break down left right and center - it means you lose the hours no pattern protection. Also you dont have to chase the extra hours.
A 767 F/O is about 30 grand better off than a 737 F/O.
As for more days off.....well maybe but only once you are in the top 20-30 of the squirrel...otherwise your bidding power for trips is useless.