Depending on age and physical condition, we might see more than 30% dead. The Liverpool study at the start of this thread had 75% of unvaccinated becoming seriously ill, with 2/3 of those who became ill dying. A 50% mortality rate
Realisticly speaking, if we get a serious epidemic, the ones who will get the vacines first will be doctors, nurses and other medical personnel, police and other emergency personnel. Namely the people who cannot function without coming into contact with sick people.
(The families of the rich and connected will also get vacinated first, but that's another issue)