Change my mind.
Looks pretty nice, but I feel like the grouping and achievement areas are gonna be almost dead content. Marks also need to be rebalanced because currently you'd get more marks per hour if you kill bosses slower - I think Ryan is now aware of this so hopefully it'll be changed in time for release.
Overall I'm pretty excited for it though.
Yep, we're aware of the various issues that our current design for marks of War has. We'll be discussing it and looking for alternate options.