info on objects in a system : use your long sight !

[Suicide Junkie]

The button just right of the galaxy map will give you a nice local system map. Press the toggle to show labels on the planets, and you'll see what kind of colony each is.
The colony type should give a good idea what facilities are present.

A collision alarm would be OK, but would need a separate volume control so it can be turned off if it gets annoying.

I don't know about the radar though. Having full coverage of the system on your mini-map radar built into every ships would be a bit of a dissapointment. Sure it would be handy, but then it would also be free and invulnerable.
If it were still a component, then there wouldn't be much difference between a level 1 and a level 10 scanner.
I see it as;
1) Radar mini-map - Short range, 360 degree, computer processing to simultaneously track many ships weapons and stationary objects.
2) Optical LR FoV - long range, moderate view angle. Minimal processing.
3) Narrow beam scanning, When targetted at long range via clicks, you can pick of a few extra details for one ship at a time.