Add posibility for updating/deleting app registration
After you register an app using appregnew.aspx there is no way to update the data. If you make an error during registration or if the app domain changes you have to register a new app (with new ClientId).
It possibilty to update the data while keeping the existing ClientId would be very usefull
Jason Warren commented
Currently the only way to edit or remove an app appears to be with the Remove-MsolServicePrincipal cmdlet and it looks like this requires tenant-admin rights. There should be edit app (e.g. AppRegEdit.aspx) and unregister app (e.g. AppRegRemove.aspx) pages accessible to admins of the app store or users with the SharePoint admin role.