Couldn't you outsource the implementation of just the Guild QoL to a team of consultants guided by one inhouse lead developer. That way you won't use up permanent company employees and get this very important and way to late feature into the game ? I believe in the end this will safe you more money and resources then if you keep pushing back the QoL. You might lose customers or burn existing customers out keeping it way until late next year, then biting the bullet and let an external team develop it for you.
Just how my developer mind thinks I guess ?
Where we can, we do use outsourcing though. For example, the killboard, character builder and general website development is largely done by an external company.