Well, aside of me missing old monitors showing heatsinks (And if possible, upgraded due to water submerging) and ammo (Would be nice after some explosions to see where last half-ton of ammo left) it would be good to see any broken/disabled equipment. For example, that BAP being suppressed, TC, MASC and other stuff being out of picture etc.
It would help to have a better, colorblind-friendly two bulb weapon door indicator.
Would be nice to have data on other guys in a lance
—Direction arrow
—Range in meters
—Their armaments
Let's say, for lasers:
Red laser icon with one dot below to show smalls
Green with two dots for meds
Blue with 3 dots for larges
Blinking versions for pulses.
For missiles, it's generic missile icon with:
Line for SRMs
3 dots for LRMs
Blinking without extras for SSRMs
For ballistics:
3 rounds for machine guns
2 rounds for UACs
Shrapnel cone for LBXs
Single diagonal shell for AC/10 and AC/20
Single diagonal shell with "confetti" for Gauss Rifles
Single vertical shell for AC/2 and AC/5