How would this "egalitarian pay structure" even work? Is Ryback suggesting that when Cena wrestled a just-up-from-NXT Neville on Raw, they should make an equal amount? This feels like posturing on Ryback's part - he wants more money but doesn't necessarily want to say it. Which I'm okay with! But from reading his post, it doesn't look like some sort of well-thought-out proposal to radically change the WWE pay structure.
RE: unionization, I'm having a hard time seeing how things substantially change with a union. Film actors are unionized, but Robert Downey Jr. isn't making the same as the (relatively) unknown guy playing Spider-Man. The main benefits of unionization for WWE guys would be non-salary benefits like company-funded health insurance, retirement, and travel.