As contrasted against:

We reject the TA. Nothing material happens for at least six months after the new NPRM rules are out. During that time, the company hires more and then the economy turns south, so we are way overstaffed and we go back into 4a2b with NO changes. The bad economy leads to a Republican in the White House. We are negotiating for pay raises and improvements in a bad economy and an administration that is less labor friendly. We end up with no gains at all. In the meantime, the company has opened Paris and Hong Kong anyway, under current FDA. No problem getting Captains to bid, as there are no raises anyway. The new hires jump at the chance and all seats are easily filled.

In the alternative you seem to favor, we have gained what, exactly?