I was playing earlier and it struck me that the lower Hud could use some attention. Brake pressure gauges are great, but not urgent. They should really be on the right hand side. Indicators that need immediate attention such as Sifa and Pzb should be on the left nearer the centre of the screen, where they more readily catch the eye. There is also plenty of room to drop the oncoming signal indicator and add advance warning of speed changes to the top of the same box. As I've suggested before the accelerometer and inclinometer could be combined and portrayed horizontally. With an arrow at one end showing the direction of travel it could be tilted to show the gradient. Surely we have some budding Ux designers on the forums.
This is where a modular hud would be great, because then everyone can customize what is shown and where it is on the hud or screen.