As much as everyone hates us for making noise about these issues, we have, and that has resulted in national discussion and (IMO) a clear eventual consensus. I suspect these reforms will be implemented eventually, it's just a matter of time. If I'm right, these are areas we should be focusing our efforts on, for practical reasons.

Make Genital Mutilation (Circumcision)

The main hurdle to this issue is the fact that it infringes upon the religious practices of an already persecuted group of people—namely, Jews. Regardless of the morality of it, public sympathy for Jews in light of the Holocaust is still very much alive, and if they oppose reforms here, there's a good chance the majority of the public will support them out of guilt. However, even reform Jews are reconsidering this barbaric practice. If there's a sizable contingency of Jews willing to support this initiative, society will likely feel excused from the fear of being labeled anti-semitic for supporting such legislation, and support the moral option. Furthermore, even a lot of feminists are against the practice, so resistance on that front will be limited.

Legal Paternal Surrender

There have been a number of cases recently, which have highlighted the many ways in which unwilling fathers have been held responsible for children they never consented to have. Unsurprisingly, public support has focused on cases of obvious male victimhood, such as male statutory rape victims and non-biological fathers, but I believe such cases are gradually getting the public to realize that men should not be forced into fatherhood unwillingly. When I have posted about LPS laws in other subreddits, support has actually been fairly strong. I think most people realize this is something that should be implemented, but don't have the political will to demand it yet.

Gender-Neutral Military Draft

There has already been some legal movement on this issue (sorry, can't get the link working in Reddit's formatting for some reason):

https://mobile.nytimes.com/2016/06/15/us/politics/congress-women-military-draft.html?referer=https://www.google.com/

...and it has support among a number of liberal politicians. Feminists tend to want the selective service registry (draft) to end, rather than requiring women to participate, but they are overwhelmingly in support of equality on the issue. Personally, I would consider either outcome a win for men.

Ending Lifetime Alimony

Again, there has already been evidence of political will on this front, and there is ample evidence that suggests society is ready to update its alimony laws. Lifetime alimony only makes sense in a context in which women weren't allowed to work, and the number of women still alive who can claim to have grown up in such a context is dwindling fast. Furthermore, as more women become subject to alimony laws, feminist resistance to these reforms will fade.

These are the only issues I could think of that are likely to result in legal changes in the foreseeable future. Social issues and cultural change are much harder to predict. I'm sure I may have missed some potential legal changes though, and would welcome additions to this list. Anyway, I think it's important that we focus our efforts on what is feasible in the (relatively) short-term. We need victories. More to the point, we need these victories to stem from MRA efforts. I would encourage people here to donate to and support MR groups that are working towards such reforms, such as the National Coalition for Men and the Canadian Association for Equality.