I'm guessing that what you're describing is probably what the X4 (or whatever the next generation of L6 product is called) will look like.  They'll use the fx from the M13, the amp/cab modeling from the X3, and they'll probably have 6 or 7  "slots" that can have any fx/amp/cab assigned to each slot.  That's my guess, at least.  And yes, it'd definitely pull some sales away from the Axe-Fx.

To me, the hard question is form factor for the floorboard version - I know you want a rack version, and my guess is that L6 will eventually build something like what you're talking about, but L6's bread and butter in amp modeling has been all in one units.  The M13 is already pretty darn big, and if you need to add more buttons, I just don't know that L6 can make something much bigger than the M13 and still have it be viewed as desirable by consumers.

Interesting to see where it will all go, though.

Cheers,

Fester2k

I use a Atomic Reactor with a Podxt (and three model packs (no bass pack) and a Vox Tonelab (desk top model) it has a effects loop and that can open up some sonic possibilities. I bought a E-H 2880 Super Looper and foot conroller and that is a great tool, add in a E-H Stero Memory Man with Hazari

and wow, I (hope) to afford a E-H Cathedral Reverb as its one of the finest reverb units I have heard (IMO) I throw in a Boss Slicer at time too or a Roger Linn Adrennalin III (was a II but updated it with the two chip kit and faceplate (well worth it , it really sounds better) I looked at the M13 and also Line 6's looper but it had redundant features (to me) I wanted a looper (though the E-H Stereo Memory Man with Hazari has a looper function, I guess I went from

individual pedals and a Vox amp (still have those) to the Atomic and the Podxt or Vox Tone lab and then felt something was missing so added a few individual pedals and the looper (I agree that the M13 and X3 may be a cool combo but the M13 is effects from the modulation, filter, distortion and delay

units + Verbazilla and the X3 is chock full of effects (though the dual rig is cool) no real righ answer, user preferance I guess. The Fractal Audio gear

is astonishing for sure, hope they make some (mid priced models ) or I save for a long time, I did E-H gear as its never a single effect its a twist and a turn plus the effect, I use a Line 6 Variax 500 and Workbench as well (when time allows)

best and Happy Holidays

dwwave