The game crashes when loading the Unvanquished specific maps (parpax, platform, forlorn, chasm, etc). According to the crash log, the default.cfg couldn't be loaded and missing some essential files.
Older Trem maps seems to be fine.

Well, since the game is still in alpha stage, you can try different implementations before settling on a permanent solution. However I think the radar on the HUD is more than sufficient. Cluttering the mini map with radar blip would create too much distractions.

As I mentioned above, this feature could be utilized as an in game effect if the grains can be made more coarse.

So even if a battle suit can't be equipped with a radar he can still have access to it, as long as another team mate has one nearby? If so I think it's a pretty good idea. It will probably promote team work as well.

So does this mean that if one player is equipped with a radar, all other teammates will have access to the radar readings?

I think the three eyed version would look better if they were asymmetrical with different sized lenses.

D:

I'm curious why this feature is even in the game.

I think the texture still needs some green and orange in it.