Hi there
You need 2 on the flight deck - 1 Pilot and 1 Dog
The pilot is there to feed the dog and the dog is there to bite the pilot if he touches the controls.
Maybe MOL has a point, but you need two people on the flightdeck at all times. Maybe a 737 rated pilot and someone like a basic CPL to operate the radio's and double check the pilots actions call out the checklists etc, it would certainly be cheaper I would think.
Cheers
Anthony