There's a product on Steam called Gestureworks Gameplay which seems to address this, but it doesn't appear to be much of an attraction.https://gameplay.gestureworks.com/
I wasn't able to get the overlay to show up on Diablo 2 yet, but there are some things I probably need to try tweaking. Will update if I see any notable progress.
It's interesting to me that this doesn't seem to be a space of much interest for gamers, in spite of the growing number of Windows tablets and hybrids out there. Seems like a ton of older games could be made fun/playable on low end tablets, and even many newer ones could work well on high end tablets like the Surface Pro 3.
I suppose it's just so much easier to grab something off the App store that was built for touch...