Slots aside the airline must be worth zilch as it made no money and has hardly any assets. What's stopping anyone buying the airline, taking the slots and closing everything else down?
(Assuming the slots are transferable, which is far from clear. Why did the Flybe go to such much hassle trying to claim the slots grandfathered to the old airline if they could just get their own slots so easily? That alone suggests these are just remedy slots)