The problem with the B-scale contract now in force at Sunstate is that it applies both to 1000 hour wannabees, and to the relatively few multi-thousand hour pilots with families who just want to settle down.
If Sunstate had dropped wages only for sub-2000hr pilots, it would be hard to argue against.
But given the difficulty of getting an ATPL in GA now, it will apply to every newly employed FO fairly soon.