Appreciate the original post, here's some of my opinions masquerading as thoughts:
First but not necessarily foremost is that I believe 'touch' needs to be looked at in a historical perspective. When DAT first came out some people thought it was the end of civilization and others thought it could be a great way to expand track count without degrading sound quality. Over time the technology just kept improving and now we have the modern DAW. In light of this historical perspective somebody mentioned doing away the screen and going straight to holograms...I was thinking that both of them could be dismissed and it would be based entirely on what you could envision in your head. Sound ridiculous right? What about amputees controlling their new found limbs through thought?
Next up is a qualifier: If I had a wonderful console already I doubt I would be looking at 'touch'. I'd already have everything I need but over time what if that hardware was holding me back whether through technological obsolescence or just deterioration. I was in my basement today and saw an old (circa 1978) TASCAM mixing board...the faders no longer move, completely stuck. Afraid to even look at my old reel to reels.

The fact is I don't have a wonderful old console. I was looking at the VS-700 (just before Cakewalk showed multi-touch functionality) and it seemed to me there were some very upset customers dissatisfied with the implementation of that controller in the new X series. That really got me thinking just how much I was willing to spend for a CS.
This brings up a truth about touch screens: It is much is easier to modify something that is virtual as opposed to bits of metals, circuit boards and various other materials bolted together. With touch the screen could be modified at will to match the capabilities of the DAW. To me that is very powerful. So if the DAW allows hiding/showing channels the screen reflects that immediately. Muy Bueno!
Seems like I could go on but it is New Years...so I'll just say this: when Cakewalk first showed the demo vids of multi-touch I wanted it THEN. I still want it and I will get it but things need to move in progressive iteration of OS, DAW and various other things. In the meantime, I have a nice little Window Surface running Win 8.1. It works fantastic as a remote transport control and it works okay for changing some minor items in tracking mode. But it is too small to mix on though it is kind of fun moving multiple faders at once.
I really look forward to what the future may hold. Have a great New Year.
Regards,