The Korg Triton is great if you want to have it 'all in one box' so to speak.
It has great sounds and the best effects system of any synthe so far, an easy to use and relatively flexible hardware sequencer and a fully functional, easy to use sampler that has some extra new features added in 2.0.
No it doesn't have internal resampling and you can't reroute audio the way you asked- it just won't work. Hopefully Korg will add internal resampling in a future upgrade.
The sequencer does not contain swing or groove quantizing but my advice to you is to try the quantizing options that are available out beforehand because they just might be good enough (there is percentage quantize available).
The Triton's synthe section is not as powerful as something like the Kurzweil K series or Emu samplers and modules. It's filter has no resonance in LP+HP mode unfortunately (The Trinity had better filters in my opinion). The drumkit programming is also a bit more limiting than in something like a Yamaha EX5 for example. But the Triton's ROM waveforms are mostly excellent with the exception of the crappy acoustic piano sample (get the PCM piano board or get your own sample from somewhere for that sound). It's LFO's are very flexible with 21! different waveform choices and in all the Triton does have flexible modulation routings. However, my advice is not to go on what the synthe doesn't have but WHAT IT SOUNDS LIKE AND WHETHER IT INSPIRES YOU WITH YOUR MUSIC!
The Triton can function as a dedicated 2 in 6 out multi fx processor- therefore you are getting powerful fx processing for your external gear etc thrown in for nothing!
Yes you could also go the hardware seperate components route with something like a Roland MC80 hardware sequencer hooked up to a choice controller (like a Korg Z1- I own and love this keyboard!) and mabey something like a Roland JV module (or the new excellent XV modules).
As a matter of fact if going the 'seperate' way, 2 great new boards to check out (both with 88 note weighted action keyboards) are the Yamaha S80 and Roland XV88. The XV88 has 128 notes of polyphony as opposed to the S80's 64. Both can be expanded with extra boards and both had HOT sounds and effects.
Check them out. As for Roland workstation synthes- I'd wait a little while and see what new toys they will bring out as the XP series are getting a bit old now in my opinion. No doubt they will come out with some super workstation to compete with the Triton based on the XV synthes and the MC sequencer (this is just my guess!).
However the Roland XV and Yamaha S80 can't sample like the Triton can.
Like yourself, I am also looking at going away from the computer route. There is just too much bullshit involved in using a computer for music (midi/audio). Plus the fact that I am so computer phobic!!!!!!Cheers.