Sorry, can't catch up the long topic..
Just a few things which i found important:

Keith says, that MC is maintained as a separate package.
Good point.
Therefore all changes/submissions to MC should be stockpiled in its
own repository.

Another point:
- Keith's vision seem too complex for many people to understand.

So, what i proposing:
Lets just refine and write down a simple set rules, and use them for
our daily needs.