Ah, FSSS. Anyone who have the appreciation for giant robots or Gundam have probably heard about this. If not only for the fact that Nagano contributed many iconic Gundam universe mechanical designs or that he worked on pretty much everything on L-Gaim.
But mainly simply because its gorgeous as heck. Ladius Sopp is also the most womanly male lead ever.
The storytelling may be because of its universe-building nature (it whas originally going to tie into the Heavy Metal Armor L-Gaim continuty but due to friction with Yoshiyuki Tomino and stuff in general it became its own beast). It's more like a chronicle of the different royal houses of the Joker System with different little vignettes into what went on during a specific moment than a real narrative.