We have them as:
- Villains, with their Critical Event if we’ve beaten it
- Un-defeated Events (normal and Critical), in chronological order
- Earned Collections
That way, we have a clearly defined campaign, it’s easy to pick Collections to take with us, and we have the alternate Villains right with their base versions just like the heroes. If we decide to start a new campaign, we’ll just pop everything back into the “un-defeated” slot.