I was perhaps a bit naive and continue being so...
It feels as though the issues you listed seem solvable? As in, the work to create a distro & craft a community that solves the above problems is work that can be monetized, possibly in a RedHat-like way. I don't know much about RedHat's customers, but I'm curious what percentage of them use RedHat for desktop GUIs.
It'd for sure be a lot of work, particularly the hardware support since you'd have to convince other vendors that it's in their best interests to play nicely. It really feels like there's huge potential upside here because you'd be able to drive down prices (with open source development) and have contracts on the enterprise support angle.