Say position...

[roncachamp]

Reading out my gps distance to the airport reference point is worse than reporting a lake several miles in length?

Not if you state that it was derived by GPS. Do you do that?

Your advice is fine if I'm over a charted visual landmark, but if not, you're gonna get a bearing and distance, whether you like it or not (well not you, Steven, you're retired now...)

Fine, but don't expect ATC to have any more confidence in your report than the guy who reports twenty miles out as he's crossing the Class C boundary.