I wouldn't be surprised if the whole concept falls flat on its face, unless they assign F/Os to the freighter fleet.
There is obviously a noticable deficit in the number of F/Os needed and those that want to apply, probably already have and those that wish to give it a wide berth, have done so accordingly. Simply extending the application window will probably be futile, unless what they are offering becomes more appealing and above all, is deemed to be palpable.