The thought came to me. What if for match making or leviathan loading screens etc that the players average total illuvial tpi is displayed. *Missing illuvials are 0 TPI.
This sizes up the competition. Can be a boast (even have an emote). Can be a mock for bad skill (like me). Encourage players to strive for a better average and is in a way a meta quest of it's own, that steers to more playing and market participation.
The only problem is leviathan isn't a played mode.