When you are customizing the dashboard templates, and you have a customized a tile, but realize you would rather it be in a different container, you have to delete it and then rebuild it rather than just drag it to the desired container. This makes it very time consuming to get the template customized.
I fully support this idea! It is surprising to me that it isn't possible to drag'n'drop the placeemtn of the containers I've built, and quite annoying to be have to delete it and build it again.