I wanted to submit this enhancement request for Outlook, although it might of course already have been submitted.
In my Outlook, my Inbox has a large amount of subfolders (one for each user that I have corresponded with) and incoming email from these users are routed into these subfolders.
The problem is that there does not seem to be A SINGLE VIEW for displaying all non-read emails in these folders. So what I think would be useful is the ability to create a view based on a user defined query. The user can define a query to retrieve emails (based on some criteria, e.g. "not read") from any folder(s) in the inbox and have these displayed instead of the main inbox folder.