I haven't beaten coil 1-5 yet, once I've done that the plan is to beat coil 6-9. After I've got that far I expect a new patch will be out seeing as no one I play with has that much free time to dedicate to clearing coil.

If I had cleared coil and the ex primals though, I guess I'd just stop logging in. It's a themepark at the end of the day, I love FFXIV but I've loved a lot of games, once I've "completed" them I stop playing till an expansion comes out.