Give more users the ability to view storage space available and where the content storage quota is being used up.
Please keep these pages available (or continue supporting similarly available functionality), and make them available for either all site users to view, or at least to those who have contribute permissions on the site.
We are running into issues as we have collection quota limits set, but there are few administrators/site owners available to monitor these reports, and very large numbers of staff who contribute content and use the sites.
This would help users better manage limited storage as administrators/site owners would no longer need to share their screen one-on-one to walk all the contributors through reviewing sites/webs/lists; they could just be made aware of the links to the reports and better manage their own lists/webs/sites where they're contributing content.
Thomas Bak commented
Completely agree, this should be available from e.g. Site Contents.
Right now the only link to the storman.aspx page in SharePoint Online is placed in Site Settings under Site Collection Administration but Owners can access the page so at least start by moving the link under Site Administration which Owners can see.