I want a Kanban feature for Xenforo. This would allow forum members to have or create their own private kaban collaboration board. Each forum member can create tasks and then move them around a grid. Having Kanban would literally set Xenforo on fire. This would be the coolest add-on. People could start collaborations and tasks. Kanban is proven and better than GTD (Getting things done). If it integrates well with the XenCarta Wiki + 3rd Blog solutions + 3rd party CMS, this will be the hottest add-on.