Windshield Flight HUD Projection
This is somewhat similar to the "Location Radar - Pin to HUD or Place in Rudder" but I think it's different enough to warrant it's own.
1970-2000s fighter jets had HUD data projected onto a fixed screen in front of the pilot. Because of the large cockpits with no real location to place the radar (Other than maybe above the pilot, which is where I put mine usually) I think they are perfect candidates for some kind of HUD projection.
These could be simply transparent panes of glass that can be placed similarly to the radar containing speed, direction, radar, and other things.