Fixed elevation meter
The elevation meter at the minute goes off the closest part of the ground where your are at the time.
We need another meter that reads the lowest part of the ground at all times, like the ice lakes.
If they arnt already, having this system would make orbital scrips possible and relatively simple.
Another way to do it would be a new block that can be programmed to set a lowest altitude, and a highest altitude. So you know exactly how high up you are, not just your relative hight to your surroundings.
In other words, we need a base, sea level altitude, like real life.