Not quite, no...
@Max Factor - Thank you Max, there are things that the FSS
doesn't show without scanning. I'm glad that you enjoy the process of uncovering such things (or not if they turn out not to be what you thought / hoped).
But this is why I have said a few times now. Remove the spectrum readout, now the player only knows how many bodies are in a system, not what those bodies are. To find that out, they have to scan every single body. Maybe it will be an ELW, maybe not. No way to know until you have scanned it, and if it isn't (and that's what they are looking for), tough.
Now, obviously I'm not suggesting that FD should really do this, because I don't think it would be popular at all, I'm just suggesting that FD provide the same degree of knowledge
to those who want it (hence optional) because they are looking for things that the FSS doesn't reveal without them having to scan everything just in case.
Oh, and yes, I know you could identify with certainty an ELW from the system map, but certainly in my experience I find the FSS to be much faster, obviously other peoples mileage may vary.