Don't even consider a touch screen monitor if you aren't running Win 10, Win 7's support is OK for somethings, seriously lacking for DAW control.
I've been interested in this for quite some time now but always get put off by the price of a good touch screen monitor with 10 point touch functionality, fast enough response time and high resolution for video editing, and I definitely agree with bigger is better. BIG enough that it would turn Cakewalk's mixing console into some kind of a Star Trek type of large format mixing console could be quite fun and inspiring to work with.
The only real put off for me is the prohibitive expense of What I consider such a virtual reality toy as there is no real tactile feel or response. Last time I checked for anything with reliable quality, they were well into the $1000's + dollar range that wouldn't lag or bog down with latency. Yes, they are out there, but only if you are willing to spend more on a monitor than most people spend on their entire computer DAW systems.
I've also tried the Windows tablet route through Bluetooth which was flaky for anything other than using the computers keyboard on the tablet.
Android powered DAW controllers work much better, but cell phones and tablets are way too small of a screen which absolutely required using a touch pen, ppbbttthzzz, but I don't have the best of tablets. It's even flakey controlling my Line 6 Spider V120 thru USB which works great from my computer.
Adequate Touch screen monitors I feel have to be at least 27 " wide screen to be useful.
And keep in mind that the functions/commands run through USB , which shares buss traffic with most modern MIDI devices.
Specifically in my case my Behringer X Touch DAW controller which can spit out and transmit 100's of MIDI messages with one swipe of a fader of turn of a knob. As does a pitch wheel or modulation wheel on any synth does.
With the hands on tactile feel of it's motorized 100 mm faders, knobs, and buttons, it already makes Cakewalk's deeply and fully automated mixing console into a large format desk with stellar automation, and can be actually "expanded" into a 36 channel per bank DAW controller for a fraction of the cost of a good touch screen monitor. It also has foot control for hands off stop/start and punch in/out recording. I shouldn't have to explain how useful that is.
However, expanders take up valuable desk space I'm fine working with a single unit working in 8 banks at a time, and really can't afford the desk space.
Believe me, ever since I first laid hands on a Mackie DAW controller I soon realized my recording life experience would not be complete without one.
I had a Mackie for about 10 years, until it met it's death with an unfortunate roof leak. Replacing it ASAP was my second most important priority, my first being of course was replacing the roof.
And that's when the X Touch caught my attention as is was much less expensive, able to run great in the very familiar Mackie protocol, and was expandable to Ethernet protocol, which my money says, it's the next big tech improvement that is sure to kill USB and Thunderbolt interfacing. The X Touch can control a DAW and a Behringer X Air digital mixer both at the same time.
And that means, you can record and mix FOH (front of house) lives performances in multi-track on a laptop.
And if it has a touch screen monitor all the better,
as long as you don't try to use them at the same time and instance, you shouldn't have a problem with either.
And so the best touch screen DAW experience I've had so far is with Bandlab's "Mix Editor" on Bandlab.com.
Bandlab as achieved things I didn't think would be possible in my life time. I am actually collaborating with artists who record and create music entirely on a smart phone! And I can download it, import separate tracks into Cakewalk, do my thing(s) than upload it back to Bandlab where the cycle can continue on and on
It is a workable cloud based DAW, that alone blows my mind.
Every time I open it I get a message it recognizes my X Touch, and so I can only wish and pray that they are trying to integrate the Mackie protocol into the Mix Editor.... WOWZER! How COOL would THAT be??
NOT having to rely on a touch screen or mouse I'm betting would have great appeal to everyone.