If more victims come forward from a publicised case, I'd wonder how many of those victims didn't jump on the bandwagon.
I'm sure a particular case can still be publicised and to ask for more victims to come forward if only particular aspects of the case are released. Aspects that the victims will recognise, but that are not widely known to the public and wouldn't allow to easily identify the accused.
You can still show e-fits but not mention what type of crime it was in detail. Assault should suffice.
Unfortunately, more often than not, rape ends up being a person's word against the other. In the same way as verbal threats and harassment.
I doubt there will ever be an optimal way of dealing with these that is fair to victims and anyone falsely accused.
Having said all this, I don't think accused of sex crimes should be treated differently from people accused of other crimes. Either all should be available, or all should be treated discreetly.