Pending Category for Task or Milestone

Currently you can mark a task/milestone as "In-Progress" or "Completed". It would be nice to be able to mark the task or milestone as" Pending". Often a tasks/milestone gets "tabled" for a period of time. During this time I do not want the item showing as overdue, but would like to be able to view Pending tasks/milestones. I do not want to delete the task/milestone as it will eventually become active again (however I would not know an estimated new due date, so simply changing the due date is not an option), but I do not want it sitting in overdue tasks.