Over years I have had one problem with bazaar - it is sort of hard to tell which packages are "meant for real" (like Koldo's regulary maintained packages) and which are "one time commit and forget".
I think this might cause a confusion for new users, it is also the reason why I have not wanted to put bazaar into predefined assemblies.
Now I have got an idea - what about adding a parameter to .upp (package), which would allow us to specify this for package, then perhaps use some color in package selector?