…
What does FSS stand for?
…
Full System Scanner.
(Incredible what reading official announcements can reveal
Thing is, showing the system map without scanning wouldn't make any sense because if you already know which planets are where in the system you wouldn't need to scan them anymore. So keeping the instant reveal is a solution for your problem, but not a solution for the other problem: That the current exploration gameplay is boring and uninspired.
The new FSS is basically a long range DSS - detailed surface scanner.
In the current system discovery scanner and detailed surface scanner are separate things. In the new scanning system they are identical (and have both the same infinite range).
A simple honk in the current system revealed the system map, but not the detailed surface information. In the new system it reveals how many objects there are in the system, roughly what these objects are - the only thing removed is the relative position of those objects.
In an alternative system a honk could reveal the system map. Then the FSS is required to detail surface scan the objects - using the exact same method as the new FSS. The FSS then reveals the absolute position of the object, their material composition and other data and the USSs and other signal sources.
It could be adjusted in a way that the first honk just shows rough representations of objects (same representation for rocky, metal, metal rich object, same representation for atmospheric objects…).
The real problem with current exploration gameplay is that there is in almost all systems nothing interesting to find and the new scanning system won't change that. Revealing the system map in itself is not an interesting gameplay aspect. What makes it interesting is what players then do with that information.
With the new mapping system things get interesting as POIs can be found - it remains to be seen how often interesting POIs will be found - but this is a good addition. But it has nothing to do with the way system scanning works.
The discovery part of the Codex sounds very interesting and might add a lot to the exploration gameplay, but again it has nothing to do with the system scanning.
What makes the current exploration gameplay boring and uninspiring is the lack of something to find and the difficulty to find it. It's not, in my opinion, the instant reveal of the system map. It's the lack of something to find inside the system.
And as I said, the surface mapping resolves that problem of lack of something to find in the system. It has nothing to do with the system scanning.