Running drivers in userspace/VM

[KOLANICH]

Hello everybody. ReactOS project is devoted to making an OS kernel binary compatible with NT kernel. In their official FAQ it is written that they cannot be replaced with GNU/Linux + Wine because of drivers which cannot be run in Wine. I'm a bit sceptical about their OS, so I wonder why cannot drivers be run in wine?

Drivers are run in ring 0 or 1, right? Why it is impossible/too complicated to 
a) expose some privileged instructions into userland through API;
b) expose IO space using IOPL;
c) make a mock of NT kernel to allow the drivers use its ABI;
d) patch the binaries automatically to use API instead of privileged instructions;
e) if a driver doesn't works well enough in userland, create a micro-VM using VT-x and VT-d and put there NT kernel mock and the driver?