My biggest complaint with tube amps was that if you had a two channel amp, you had two sounds. You had to go back and turn knobs (or buy and dance on more pedals) to alter basic tonality. Flexibility is somewhat limited. Helix is much more flexible in this regard.
Lately, I have been looking into the Hughes and Kettner amps (Tube amps with midi control) and just happened to see this morning that Mesa Boogie have announced the Triple Crown with midi control as well.
I might have to check this one out. Helix and midi control of all amp parameters with messages sent from the helix to the amp. Tube amps and midi have been around a long time, and until recently, no one was putting the two together. Recent shifts / advancements in modeling technology may well have brought on this kind of thinking. After all, no company wants to lose market share that they have worked so long to create.
Best of both worlds? Maybe.
My point is that manufacturers are working on things right now that we are unaware of. Who knows what the near future will bring. I personally look forward to what will come next...