No,

.. the way I saw minwin, was the min level of wrapping they wanted around the kernel to test it out..
If you classify 'windows' as we see it as all the gigs of crap wrapped around the kernel, to provide a shell.. then minwin was the simplest version of 'windows' ever created, just to test the kernel..
I mean imagine this, you are testing new builds of the kernel out.. you are probably launching these builds in a VM, or on a networked machine you can bootstrap.. do you:
A: stick windows vista wrapped around it, and potentially have to deal with broken things from kernel changes.
B: make a min level of interaction with the OS to see things work as expected..
I'm not a kernel developer, but I know what I would do while working on progressing raw kernel technology.