We're using a few list reports in our dashboard. However, the way we want to ideally set up the page is constrained. We have to really widen list reports in order to show all of the fields without scrolling. Even if the field itself does not contain a long list of characters, we can't shrink each column further because of the field name constraint. Ours is a bit long, and we'd like to be able to shrink the column further to hide pieces of the field and make the report more narrow.
Thank you for your idea. We do not currently have plans to add an option to wrap text in list report headings. We will continue to monitor feedback on this idea.
In the meantime, one suggestion that will get you closer to what you are looking for is to use a pivot table. You can setup a pivot with no columns and multiple fields in the cells section.
After creating the pivot, click the gear icon, select Customize style, and select Show cell headers and Allow table cells to wrap.