While some explorers like the FSS, it made many old explorers quit exploration completely, myself included.
The main issue is we need to complete the FSS minigame, thereby exploring the system, in order to tell if we want to explore the system or not. There is no halfway measure, no way to garner any info on the system until the FSS is completed. Unfortunately the FSS is a bolt on minigame requiring us to "park" the ship, stop flying completely, and do the little dial in the numbers QTE. Every. Time. We. Jump. Into a system. Over and over and over again.
Before the FSS we'd use the God Honk to reveal the system map, which we then could look over to see if any planets looked graphically interesting or if there were any unusual orbital mechanics or star configurations to check out. If so we needed to fly out to those planets to explore them.