Its not just an issue of money. By simply offering more money you may be attracting more people, however, is that going to guarantee that they stay in officiating?
I have seen studies done that show that people would rather be more respected and work in a better environment then have a higher pay.
You will also continue to have problems with getting good officials to do the harder games if you simply increase pay. I am lucky, I can turn down or tell my assignor that I will not do certain teams becuase of their coaching staff, fans, or simply the environment they create which in my opinion is not sportsman like. My assignor is more than happy to give me other games that will be blow outs or games were officals are treated like professionals, and I still get paid the same regardless. I do the same for my college games, I tell my assignor I want mainly women's matches, there is such a shortage that it isn't a problem. I still get paid the same.
There is an inelastic supply of officials at competitive levels for soccer. The NFL found out about this the hard way during their recent officials lockout. Throwing money at the problem will help in the short term get officials, but it will not help keeping those officials for the long run.
