Pure speculation, but with all those shiny Q400s on order wouldn't they want a one-type fleet? Their end-game is probably not FIFO as much as feed QF/JQ. FIFO often has aeroplanes parked up for half the day, so does not lend itself to expensive new kit. RPT is another matter altogether.
There is another thread running on this takeover. Someone with delusions about seniority on that one. Time to merge?