You've expressed it beautifully. The "out-there" anti blues lawyer effects and the possibility of routing and combining them in myriad ways is what puts Helix above any other modellers, or even standalone pedals. To me Line 6 are a bit like EHX. Big, well distributed and not "boutique" per se... But when when you turn the knobs to the end of the range, magic weird wonderful and risky things happen. The poly update made me get an HX FX to complement the Helix and run complex DSP heavy chains. From a sound design standpoint it's unparalleled, not just for guitar, but through Native for vocals, synths, whatever, it's amazing.
Yes, I'd be happy to see more amps (Bass and Stoner/Sludge) but it's the possibility of new Line6 Originals that keeps me on the edge of my seat (Please make a better EHX HOG/POG), I think that the amp and analog effect department is pretty well furnished already,