I'm in the same boat, though we don't do everything on Monday haha, we will next week, this week was a Thursday morning game XD

Coil is like 1hr maximum (we're 1shotting easily now).
Myth is 1hr, (you get 150 from coil so only need 5 WP runs)

So this game provides 2hrs of content/week for $10/month.

Nothing else has replay value, or an incentive, everything in 2.1 is a complete once situation, though gearing in CT i guess is replay i guess, depends how long it takes you to get that 1 piece so you never enter again until reset. With the stress of duty finder and having to work with possible "newbies" all the time, it's not going to be fun.