Plenty of comments here on how this problem has already been solved by other devices. This one appears to be different by allowing functionality to be extended

Plenty of comments here on how this problem has already been solved by other devices. This one appears to be different by allowing functionality to be extended more easily via programming. 3dconexion spacemouse for example is not that easy to interface although 3rd party programs like Glovepie do allow interfacing via simple scripts. Wacom tablets would seem to be the most obvious existing product out there in a similar space - simple scripting can interface Wacoms with other apps like music players, so perhaps this new device isn't necessary. Users in the video are interacting delicately, this looks like a problem - when you are zipping through interactions to achieve tasks (especially when they are repetitive) you want to be able to have good repeatability. Delicate movements here are your enemy. I guess the TLDR of my comment is that nothing out there really solves all the issues out of the box and this one might not either unless it can build an ecosystem of drag and drop scripts for people to use for their day to day tasks. edit: interestingly in the list of "requirements" (para 2.) the ease of installing new abilities or scripts or whatever extensions is not listed other than "it has to work with the tools we use" and in the "developers" section it should mention an "app store" otherwise no-one's gonna find that awesome Photoshop extension for it.