I have a few really good ideas, my friends, and wanted to get your input along with any ideas you might have.
Place mini-bottles of liquors and wines in the seat folder where they place the magazines. Near the end of the flight the flight attendant would gather them up and you would be charged for only what you consumed. It should be no problem with hand sanitizer.
Allow for adult movies on the airline screens. Ensure the screens are only visible to the occupant of the seat. Charge a premium.
Have drop down curtains or screens of some sort between seats once the flight gets going to allow for privacy and the mitigation of someone's virus getting into your airspace. Sorry about the overly long sentence.
Have all luggage checked and turn the overhead bins into sleeping compartments. These can be locked to keep people from falling out during turbulence. or better yet strap them in. There would be an extendable ladder when they needed to go up or down. For an extra fee you could have larger compartments for couples.