I think webmin - virtualmin - usermin need to be crushed together into a single app. It is really confusing to have modules overlapping and my users are probably going to say "why do i have to go to X to check my email"?
Anyway I like the feel of the apps but there seems to be some disconnection and overlap between them.
My recommendation: CRUSH them into a single app called "webmin" and dispense with the technicalities.
Has this already been done and I am missing something?