To further enhance the ability to organaise issues the following could be done:

1. Items (issues) could be bulk-added to containers.
2. Time estimates for items within a container should automatically be aggregated. For example: If the container holds two tasks with 1 day and 2 days remaining, the container's remaining days should be 3.
3. Reports shouldn't double-count the time estimates of container tasks and the tasks that they contain.
4. You should have the option to manipulate contained items along with their containers. For example, if you change the Fix Version for a container task, all of the contained tasks should optionally be moved to that new Fix Version as well.
5. It would be nice if containers could hold other containers, but first-round usefulness wouldn't depend upon this.
6. It would be nice if there were default searches that would automatically display these roadmap views for a given project, but first-round usefulness wouldn't depend upon this.

Please vote for the issue and andd any comments that you may have.