I chose to forego the extra dollars available on the Q400 and stay with the sustaining fleet on the "very slim" chance that a command might have come up prior to the expiration of the Command Experience Scheme.
It was a gamble with my pay packet and it involved a significantly greater duty time per roster than the 400 FO's were doing back then, but it looks like it payed off in the long run. I'd have been very disappointed if those still "frozen" on the 400 were awarded command positions ahead of me.
There could still be others whom made the same decision I did and are possibly falling just short of the company requirements but will be upgradeable well within the timeframe of the command training that is to be undertaken? They'd probably be pretty disappointed too...