I personally think that there are enough separate sections as it is, and that we could even stand to combine a few of the lower-traffic ones, but as usual, that could just be me. There don't seem to be many tricks to the NHS, certainly not in the way that the entire American insurance system is a trap and patients either band together against the Axis of Evil or risk losing everything they have.
If I have a specific question, whether it only pertains to women, only pertains to Americans, only pertains to parents, what have you - I tend to use one of two routes: search function, or just post the question and wait for responses. Sometimes people will even post links to related topics in their replies and - shazam! - search done for you, no "trawling" required. Part of what I enjoy about this forum is that it is not just an information clearinghouse - we interact with each other.