Even if you're 3000+m away from a collector and it scans a roid, the scanner animation is still very bright. It should get fainter like everything else (weapons fire, explosions, wormhole jumps, etc.) as you get farther away from it.

The animation also goes -through- roids.

I'd go so far as to say make it dimmer up close too.

I liked this actually, since when hunting denteks you find yourself spread FAAAR away from everything else, and the visible green stuff lets you know where the bots are... :-)