From what I understand with the B717 training, the cost is the same whether you have previous jet experience or not. The course is made for beginners. Then there is no saving in training. In fact, there is double training as you will need to be replaced on the DHC8. Upgrading an FO costs money to train, then you have to replace the FO - more money. Triple training in this case.
As I see it, if Qlink get more jets, it is up to them to decide who operates them, and that may be Eastern / Sunstate. Then the boot will be firmly fixed on the other foot.
To those who are thinking of leaving to get a jet slot, GO FOR IT. Enjoy the non-seniority system that
VB offers. Experience is everything, even the capt of the Titanic had thousands of hours at sea.
Live long and prosper.