I think we're at this phase in discussion because there's no alternative end game available on the level of Coil.
I believe there should be some content in which only organized groups can enter, gives the best loot in the game and can't be accessed using DF. But at the same time, there should be content similar to it, with loot inferior to Coil and can be pugged.
This is why I'm wondering how CT will work out. I hope SE can make it work, since this is exactly what people need.