In quests, we should gain in-quest points that revert back to 0 upon exiting.
These points can total up. Kills, healing, crowd control, damage, trap disabling, secret doors found, etc...
They can all give so-much credit toward's the player's MVP status.
Upon quest completion, their name should appear with a medal, sticker, and cookie showing they were the MVP.
Everybody has an epeen, whatever that is. And, it could encourage people to contribute their best!