Oh, this has been repeated quite a lot of times, but let's do it one more time. The FSS does not have all the functionality of the ADS. There is information missing that
we used to have at a glance, chief among them being the orbital hierarchy of the system and the visuals of the bodies in question. The FSS now hides such behind playing the mini-game, and in order to ascertain whether a system might be worth exploring, first you have to explore it in full. (The rest might only be mapping to reveal the exact location of POIs that you now know are there.)
One example of what's practically impossible to find now: a group of
five bodies with shared barycenters. Very rare, but they do exist, and are quite curious. It took me 50,000 systems to find one, that being
M36 Sector RI-T c3-5. Here's what it looked like after the ADS honk + system map combo:
It was of course immediately obvious that I found something extremely rare.
Thanks to Spaceman Si, here's how it looks like after the honk now:
You can no longer tell this special system apart from others, and to reveal that it would be worth stopping to scan this system of completely average body composition, you'd first have to scan the entire system.
You might not find such edge cases of the Stellar Forge important, but for those of us who do - or rather, did - the means of finding them are practically gone.