@Drano - I'm flying with a G940 with more buttons and hats than I can think of functions to do with them.

I even have a neat little "kneeboard" label on the relevant button.
The issue is the scan. I scan instruments, put my head out of the cockpit, scan left to 6 and up, scan right to 6 and up, bring up the map to check radar, put away the map and repeat. So I'm pushing that damn button constantly. And the map is constantly popping up and popping back. Which is annoying, and even though it only takes a second it is disruptive. So then I just leave the map open. And then when next I scan left to 6 and up and then right to 6 and up the map is following my scan around like it's a carrot on a stick tied to my hat. So then I put it away and don't check radar, which may be fair enough since the radar is a bit of a fudge to compensate for the ground control we don't have. However none of these are graceful ways to use the tool. It costs a huge amount of immersivity.
Having the kneeboard sit in one, plane-relative place would let me put it in part of my instrument scan, and there'd be no issue. I'd also really like the text buffer and radio controls to be set up somewhere plane-relative and unobtrusive, but they're not currently 3D objects so my (non-code knowing) assessment is that'd be harder to implement. Baby steps!
@hazard - I'm spoiled as my system and screen are pretty high-end for work reasons - so a smallish splurge on my stick and my TrackIR and I'm well set up. However one of the things I like best about HTC is their commitment to backwards-compatability. It is an inclusive and community-friendly policy, and as a small company devoted to a single, unique product that's a very positive thing. For years I flew with a mouse on a much less snazzy system, and was glad I could do so and still be competitive. I recognize I'm in the minority in having both TrackIR and a 2560x1600 screen here - and again, when I didn't have that gear, I didn't have this wish. At the same time, the future is coming, these things will one day be cheap and common, so so I think the plane-relative kneeboard is a feature that will become more popular as time goes on, and as people realize that yes - they CAN scan and have that info there WITHOUT even the touch of a button.
Paul