Alright, Town is in a very good spot this game thanks to the Bartender. My plan is very similar to the plan I proposed in Mafia III, but with the Bartender, it becomes even stronger.
When someone gets hit and saved, they should publicly claim immediately. Bartender abducts them, protecting them during the night. Now, where the plan in the previous game fell apart was that there was no way for a Detective to check the person being incarcerated. But with the Bartender in this game, he checks them at the same time as keeping them safe. What's even better is that the Bartender doesn't even need to reveal himself to get this information out to town. He just has to killing if Mafia, and set free if innocent. That person, now confirmed innocent, can now act as a figurehead for town.
Also, the medic who saved the person should claim to that person, and that person alone. There is little risk that they are claiming to Mafia, because the medic will be notified if he made a save. If Mafia wanted to fake this, they would actually have to hit themselves, and take the risk that the medic was actually saving the person.
All in all, Bartender is incredibly strong, and I hope whoever it is knows what they're doing with the role.