I liked the ideas I read about 'kanban'. If there's a feeling that work flows well, then there's less concern about when things will be done by. If you can maximize flow, or minimize work in progress.. a kanban board should try to be a visual aid to support that. -- "commited / completed" sounds along the same lines to me.
In that sense, I think "it's desirable, but not in progress" isn't necessarily bad in itself. I think it would be better phrased as "this isn't a priority for us right now".
