As blog types plugin is not really supported, I have found that Pro Sites pretty much can do this with a mod.
All the blogs I have created on my network serve a special purpose.
Users, will soon be able to pay to make their own blog. (standard pro sites usage)
I have assigned my own level to my own special blogs. (basically allocating them a blog type)
Is it possible to have a widget, that displays all XYZ Level blogs (with avatars, name and links)
Please let me know to clarify if needed