Really not looking forward to replacement refs. It was a disaster last time. I will say that the current refs are over--reaching on their demands. They should be rated the same way most workers are, by performance, not seniority. And, holding out for a 10% pay increase each year is pretty bold. They currently make $350,000/yr with guaranteed 6.5% increases. I think that's pretty good pay for how long their work-year is.
Tough job but pay and performance are pretty compatible to say the least.