flyer5 wrote:So my point was whilst GPS is important avoiding controlled airspace, does it have any special benefits once you enter controlled airspace?
I think that the entire "special benefit" is solely to make it easier for the pilot to discharge the responsibilities that all pilots have already, GPS or no GPS. It's just much harder work and more error-prone to do that without a moving map, especially in today's much more complicated UK airspace.
I can't think of any "special benefit" of a moving map in any kind of airspace that involves anyone who isn't the pilot. Your interactions with everyone else remain exactly the same precisely because your responsibilities remain exactly the same.
Example: I remember an occasion I entered controlled airspace (for the purpose of landing at the controlling aerodrome) and got a (VFR) clearance limit of a VRP I wasn't expecting, and thus hadn't briefed. A moving map made it easier to find and navigate to. Had I been using a paper chart, I'd be routing to it nonetheless, albeit with some additional delay and embarrassment in appearing incompetent.