Anyway, if upstream authors use MCM's, then either PU needs to support MCM's or one of the universe maintainers needs to post the individual packages. I would lean towards the latter as the first thing to try, but maybe the former is useful as well. It is worth looking into.
-Lex
In the development universe the package Magma Tester beta, r40Beta.3 is posted as a Monticello Configuration Map (.mcm)
If you load this into a 3.10 image, it will load MonticelloConfigurations, loading this depends upon a file in which will patch Monticello1 (trivially), and it will patch Universes (almost trivially) in order that mcm's will work.
So, in order to post your mcm package all you need to do is to add MonticelloConfigurations as a dependency.
cheers
Keith