One thing I would like to see is a distinction between "liberal" on the one hand in the sense of synonym for "let it all hang out" (right wing hard-of-thinking types) and as a synonym for "we're on the right side of history" (left wing hard-of-thinking types), and on the other hand "liberal" as a political theory.
A liberal feminism rooted in liberal political theory is a good thing, IMO, and as a practical, pragmatic strategy would have a lot to offer.
An emphasis on equality - great idea!
So a defence of individual rights and freedom of choice against an interfering establishment? That's a basis on which to fight against stopping women going into certain careers, or being expected to adhere to ridiculous dress codes.
JS Mills distinction between positive and negative rights (the "your right to swing your fist ends at the start of my nose" position) - great idea, and could usefully be applied to situations like TIMs in health care offering to do a woman's smear test - her "no" would trump their "yes".
Even some of the tenets of rule-based utilitarianism could be useful. Even most political liberals don't argue that it's okay to sell kidneys, because the benefit to a single individual in an extremely unusual situation where that individual can be shown to be free from all social and economic pressure is outweighed by the needs of the very many more people who would only be doing it out of dire financial need - now there's an argument which could be applied to prostitution as well.
The limitation of liberal theory (specially of Rawlsian "initial position" thought experiments) is that, as a very wise friend of mine put it, "we come into the game part way through." We're born into a society with such massive economic and power imbalances that simply saying "you all have equal rights on paper" rarely helps the people at the bottom of the pile. It's a necessary condition, a belief a society must have to be considered civilized, but it's not a sufficient condition - in and of itself, it won't remove inequality.
Which for me is where radical feminism comes in - analysing the sources of inequality has to be a first step to addressing them.