In a container, it would be extremely useful to group several buttons in the same tab of a container. For example, if I create 6 buttons for controlling navigation and variables in the app, it would be amazing to arrange them in a container, make the container a mater item, and drop it on each sheet. I know that creating 6 master items for the buttons achieves this, but this would help with managing real estate on the sheet and help with changing the layout (only set it once rather than change it on EVERY sheet).