DAWs should be rebuilt from the ground up, component by component, feature by feature, in 3D for XR(VR/MR/AR) where ultimately you can see the waveform as it is --- a 3D object , and interact with it like a sculpture or a Theremin experience. 2D screens, Keyboards, and a mouse are not the best fit.
That would be really fun for sound sculpting but this is a pretty small part of composition. Also one thing to remember is that anytime you want to optimize a workflow you want to reduce the number and amplitude of physical movements. Which is a big limitation of any XR tools for now that are nowhere as precise, high velocity and usable for long stretch of time than kb/mouse/screen/controllers. I really see hybrid approaches winning here instead of full blown replacement of current tools.
