As ever it depends on very personal definitions of what is ‘equitable’
E.g. some people believe it is equitable for one group of people to be privileged because that group deserves the privilege.
Obviously feminists and feminism are not perfect and of course it can steer into unfair and unjustified beliefs about men.
But if you look at what has actually been achieved by MRA it is, at the extreme end a number of misogynistic mass killings and shared care law which is diabolical for children’s rights in practice, harms women and promotes a ‘men’s rights’ approach to shared parenting...
It’s that along with what you say about the main membership that I worry about.
Also, I can see a place for advocacy for men re men’s issues and experiences.
I do hope that MRA becomes more like what you are saying you want it to be. I do think the way of doing that is perhaps maintaining it as advocacy for men but with regard to class analysis re sex. Many of the problems for men IMO are actually caused by the same sexism that oppressed women, which is why feminism would alleviate them as a consequence.