Of course there is mention of the possibility every now and again, but that means less than nothing.
To think top fighters will sacrifice their big $$$ to help the lower level guys is insane. Why would GSP, Silva, Brock, Couture, etc. put their six-figures plus at risk?
Besides, similarly to talk about it whenever it's brought up in pro wrestling, the old argument goes....you can't get 10 guys to agree on where to go for dinner, how the hell are you gonna get hundreds if not thousands of guys to agree on things like health insurance, life insurance, investments, bonuses, salaries, etc.?