System 8 limited??? Nonsense! Did you not realize you have numerous wave shapes each of which has several variations, as well as a color knob which substantially alters the sound depending on the wave shape and variation chosen? You can get more timbres from the S8 from a single oscillator than you can from the entirity of some lesser synths. Then you get a second oscillator with all those same facilities and a third oscillator that can act as a sub, a multi mode filter which also has numerous variations, cross modulation, wave mod, the usual complement of LFO destinations, a very capable effects section, performance mode with layers/splits, step sequencer with live recording/overdub, motion recording, detailed step editing/automation, etc etc. I guess it's limited if you're comparing it to some menu-driven workstation or something, but as VAs with a traditional knobby interface go? Yeah not limited in the slightest.
Oh yeah, and that's just the core S8 engine itself. Now the synth ships with all 3 plug outs loaded -- Jup 8, Juno 106 and JX-3P, all of which sound lovely. As the owner of an actual 106 I can tell you the plug out version sounds nearly identical. I only say "nearly" to cover my butt, not because I actually hear any discernible difference. I don't. Heh.
Frankly the S8 sequencer makes the P6 sequencer seem like a joke. Ooh neat, I can manually key in a sequence and that's it. No play direction, no overdubbing, no editing, no motion recording -- nothing. Maybe I've just never fallen for my P6 the way some owners have, but I'm frankly getting more colorful and usable sounds from the S8. Sure, some of that could just be the infatuation of new gear, but I feel like I have to work really hard to get the sounds I like from the P6. It always has a slightly metallic phasy sound to it that I can never fully dial out. I've pondered selling it many times but always find some reason to hang onto it.