The point of arbitration is not primarily fairness. It is partly about efficiency and finality. Not sure the proposal helps that.

Secondly, the issues here are complex so I think there really could be a fair bit of divergence in awards.

Anyways, this already is getting sucked into court. USAPA in particular needs to drag this out if they can, and the company agreed to provided the raises pre-SLI so what's the rush to arb?

SCS is the next milestone. Let's see if/when that happens. We're getting up there in dates.