We should also open up expired vaccines to whoever wants them. Expiry dates are usually quite pessimistic and medicines often have efficacy long after they're officially expired.
This is "once this vaccine is pulled out of the super-cold freezer, it starts breaking down, and you have X hours before it's worthless at best."
Worse than "worthless" is the idea that people might get a useless expired vaccine anyway, think they're protected, and then be a vector for future transmission.