I would perhaps agree to adding it to the Duty Finder, and maybe even one day finding Eureka there as well instead of going to the respective NPCs. It may not guarantee parties get filled, but it's much more convenient to access from the Finder and to an extent could be less forgotten (especially if you can see it in the list, and the requirement to go in would need to be amended as well). I mean if Gold Saucer activities can now be added to the Duty Finder, no reason why other instances can't be as well.