My first scenario is related to multiannual budgeting.
Most of our users have excels with collapsed column for months of the history/next years. They expand to months level when they want to go in detail.
We can show data for year, but when a user want to budget monthly level she can show another block "Detailed by" Month.Actually I can think at a lot more scenarios for these feature.Implementation suggestion:3 state hide/show for datablock: Always Hide, Show, Available in Quick Layout.
Something similar
https://community.board.com/contribute/ideation-home/viewidea?IdeationKey=7ffb0be8-6159-432b-b858-d6070df58e7a