Wonderful and detailed explanation -as usual- of the neutrinos.

I don't think I have any questions about them other than the questions that can't be answered yet.

I'm not very familiar with other valid alternatives, but the standard model seem to need some working on, expansion as you say, or change.
I know nothing has been experimentally verified about supersymmetry, and it's not looking good for it, but from what I understand, it can solve plenty of the problems including the neutrinos mass issue?