The problem with that as a solution is it blocks seats. With short flights to PAP from MIA, hotels are seldom a necessity. On long flights to China the loss of revenue with seats blocked and the cost of hotels and expenses adds up. Using qualified flight attendants avoids this.
MK
FSD would need a hotel room, but they are all Jump Seat qualified
and there are enough on all the aircraft. PAP FSD's don't require a hotel since they are based in MIA and JFK.