I would watch the crap out of #3. Also, perhaps you can squint your eyes while watching BSG and pretend it's #4.

Or, ultimate AU, Galactica IS ONE OF THE SHIPS THE CARETAKER TOOK. Hot Janeway/Adama makeouts? Janeway/Rosalin catfight? What would Tom Paris make of Starbuck? AND MAYBE HARRY KIM IS A CYLON!? (Also, I imagine a great comedic scene between the Doctor and Tigh about his eye.)

The possibilities are endless, really.

Also, see here.