The only lingering question for me is, is Alexis part Volm or part Fish-head? (i.e. maybe she was "changed" when Mummy was operating the Volm equipment, perhaps even just as an unintentional side effect).
The 2nd Mass is also too safe story-wise, every battle they go into they seem to walk out of, they were killing off members left/right in the first two seasons, but have we seen as many 2nd Mass to meet their maker this season? (aside from the girl from BSG).