"Atlas uses more Polar call signs, than Polar uses Giant?" . . ."Because Polar has neither the aircraft nor the pilots to fly anything".
Then give those flights Giant call signs. . . otherwise gear up to the bid award, put the furloughed back to work, and give Polar what is Polar's.
Perhaps I too should be allowed to post here under the name of WhaleFR8, perhaps also eat WhaleFR8's meals. After all, what's in a name?. . .specifically a Polar name that has specific labor contract rights attached to it.