Right, but here's the issue--the victim has rights, too, and those need protecting. Just like the accused has rights. I get wary of this idea that the State should be able to overstep certain rights not because I think government is bad, but because if you look at the states that exist, they have pretty terrible track records when it comes to social injustice. Extending the power of the State legally usually means that you will increase the net social injustice in the world, instead of decreasing it.
I understand where you're coming from and I'd probably agree on a really broad theoretical level, it just ends up being a little bit too simplistic a theory to account for the more complicated/complex reality of rape cases. Just knowing enough rape victims personally makes me wary of saying anything too strong about how every case should go to trial. Were the state to step in and force some of them through the legal system, that would essentially be a sort of "re-victimization" or second rape of sorts...a serious trigger...and without a strong case, a complete waste of time...