I like driving without the speedometer HUD because I like to use the train's own speedometer, but I cannot see the speedlimit without it, this is especially an issue on the Bakerloo line where the speed limit signs on the track are small and hard to see. So we could have the next speed limit UI display the current speed limit so that I don't have to expand and collapse the main HUD all the time.
We need a system whereby the next pair of speed changes are displayed for sections where there are sudden changes that often catch you out. The next one in current size and the one after in a smaller font.