F-Sim Space Shuttle Wish List

I have two fairly minor accuracy gripes:

1. HAC seems to be flown about two thousand feet too low.
   - 90° should be ~20k feet.
   - Tangency point with the extended centerline should be exactly 12k feet.
   - If you're interested in more precise HAC profile formulas, let me know. I've done a lot of research and a lot of
     regression fitting from real data.
2. The target landing speed should really be 195 knots +5/-10 (185-200), not 195-205.
   - I'd really like to try to aim for 195, like the real shuttle, but instead I have to aim for around 200.

And a few wish list items I would love, but aren't a big deal:

1. "Heavy" orbiter landing (18° glide slope instead of 20°, and 205 knots instead of 195).
2. Use the close-in aim point (6500ft vs 7500ft) when there's a significant headwind. The PAPIs exist, but guidance doesn't use them.
3. Ability to set the cloud ceiling altitude. I'd love to be able to set it for 500 feet and make a dramatic instrument landing.