FSS is lots of fun, but people also say that about PAs, to which I reply, "PA not fun."
Combat (and mining, for that matter) gives us tons of different tools to do the same job in radically different ways, so it is strange that exploration has gone in the opposite direction. Personally I think Frontier should be making more exploration modules, not less, and they should even go as far as making the FSS a module instead of having it installed on all ships. The only thing built into ships should be a basic honk that perhaps acts like the cheapest discovery scanner did. Then give us a variety of options - FSS, a trimmed-down ADS (pictures in system map but without all the detailed stats), and perhaps some new tools that work radically differently than either of these. Some people like PAs, other people like turreted beams, and yet others like seeker missiles. Variety is good, and it's the very thing most of ED is built upon.