Idea: enable "mouse over" functionality on dashboards.
For example, an explanatory field (black box) could be activated by a "mouse over" over an info field (i) (green circle). Example see screenshot
If I may add another example, I'm using "Latest Comment" in my sheet and pulled the comment for one row into a report. Then I have that report on a dashboard. In the dashboard, I really need the just part of the comment to show then if someone hovers over that comment it should display the full comment, as shown.