Interesting point that radical feminism doesn't necessarily propose solutions, Vestal.
Many radical feminists do, however, talk about the aim being women's liberation (liberation from oppression, male violence, male sexual violence), and tend to eschew talk of equality (whether of opportunity or outcome).
I suppose for me the value of the radical feminist analysis comes in shifting the Overton window - it's not that I want equal right to become a wage slave, for instance, but that I'd like to see the workplace re-structured to make it more woman-friendly, more parent friendly, to make men see that this would work to their advantage too (just to take one example).
I think we also need to rescue liberalism - to point out that liberalism is not the same as neo-liberalism with its rampant individualism. For instance Mill's negative and positive liberties (roughly "your right to swing your fist ends at the start of my nose"), and his utilitarianism (greatest good for the greatest number) could be used to argue against prostitution - that if it is an activity which is overall harmful to women even if a few individuals benefit from it, and if the punter's supposed right (which Amnesty believes in*) to engage in contractual sex is outweighed by the average woman's right not to be sexually harrassed on the street, then there's a case to be made for making the purchase of sex illegal. Liberal needn't and shouldn't be equated with the stupid form of neo-liberal feminism which embraces prostitution and pornography as "empowerfulising" - that's a misunderstanding of liberal theory. Just as most liberals (in Mill's sense) would argue against legalising the sale of kidneys.
*The stupidity of Amnesty's position becomes clear when you pose the thought experiment: what would become of that purported right to sex in a society where no women wanted or chose to become prostitutes? Would it morph into a right to rape? I don't think any sensible theory of human rights can include rights which in some circumstances could not exist without coercing other human beings into doing things to violate their own bodily integrity against their will.