What would YOU like?
Me, I'd like some color. I'd also like it to be a 60mm round gauge. That way I could mount it in my Defi pod. A gauge like this could be mounted anywhere by drilling a 60mm hole and putting a thick rubber band around the back of the gauge. All that would be left is plugging in the RJ11 jack. Done.
The round gauge would make a good match for the V1 info. Arrows would be top, bottom, left and right. Bogey counter would be in the center. Signal strength would be a vertical strip of LEDs. X, K, Ka, Ku, and Laser would read exactly like that (letters) and would be lit up by different colored LEDs.