Request Forms - User access to their own submissions

Many of my staff ask me, "how do I get to the request form I submitted?"  That I know of, there is no place a user can view them all (no history of submissions).    

I can't send them into a folder and make it viewable to all because some request forms are confidential.  However, I would think the individual users should be able to view the request forms they've submitted themselves.  My thought was to have a "limited sharing" setting for folders that could be selected by Admin so that users can only see what items they submitted.  Ideally, this could be even narrowed down by user.  So when you click share and select users to share with, you can then select "limited sharing-author only" or whatever. 

Then ideally users would also have a place somewhere in their account to VIEW ALL submitted request forms whereby the user can view and sort via date submitted or by request form type, etc.

I wonder if this has not been done because there is a concern that people will go back and edit their submissions?  If this is the concern, couldn't it be programmed to not allow edits by anyone other than admins?  This could be another permissions setting maybe for users. 

As someone else already posted, these forms really need to be able to be organized/grouped as well.