There is no hidden agenda; Obama will do his best to promote the interest of women and of gays. But as a President, he cannot do much.
He will sign the Freedom of Choice act if it comes before him. The act would keep abortion legal if and when the Supreme Court reverses Roe vs. Wade. However, I don’t think there are votes in the Congress to pass it.
He also wants to pass a law outlawing discrimination against gays in federal employment, housing etc. That is really more to tie the hands of future far right Presidents, bigots like Bush, I don’t see Obama himself discriminating against gays. But again, it is up to Congress to pass the law.
I do hope Obama does change the ban on gays in the military and lets them serve in the military, same as heterosexuals.
Obama will do what he can by executive orders (like he rescinded the Mexico policy just yesterday). However, it is up to the Congress to pass legislation, Obama’s contribution will be only to the extent of signing it.