When saving an attachment, I want to be able to:

• Rename the file (for receipts etc. so I can rename them with my naming convention "YYYY-MM-DD Business - Item")
• Choose default folders to save attachments in with associated action buttons. (I want to be able to tap 'Save Business Receipt' or "Save Business Expense" next to an attachment and it will open the "Save.." window to the relevant folder on Dropbox, Google Drive or local Hard Disk etc.)
• Give us the ability to move the "Save..." window around. Sometimes after clicking "Save...", I need to refer to the email to decide what to save the attachment as, but the Save window is covering the email and can't be moved out of the way.