The original Elite scanner (or the FE2/FFE improvements to it) gave both good distance and good direction.The more I look at them, the more I think that ED gives good direction/poor distance while the other is good distance/poor direction. I think you'd need to combine stalks & arcs to get the best of both, and then we really would need a larger size and more resolution.
The ED scanner, using logarithmic rather than linear scales, is a step back.
Inevitable in supercruise given that no linear scanner could possibly do that ...
EDIT: correction. In linear mode the scanner is linear in normal space, but has the problem that the scanner circles don't change at all so it looks non-linear if you try to use those to judge distance. There's also no indication of what the zoom levels mean the edge of it is, which doesn't help.
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