Let's see, you're mad at UAL mgt., so you're going to deny the jumpseat to mainline pilots? Turning your jumpseat into a political weapon - against the wrong entity will accomplish what, exactly?
When I was a JSC, I was always mindful of not politicizing the jumpseat, inviting all air carrier pilots on board, with or without reciprocity - because that's just the right thing to do. We all (well, except for me, I'm on the street..) have to get to work somehow, and improving access should be our only focus.
If you have an issue with management, there is an appropriate venue to present it - NOT by burning a bridge with your mainline pilots.