Option to Rename Files Exported from Frames Viewer

When exporting frames from the frame viewer to cloud storage apps such as DropBox or Box.com, there is no option to name the exported image prior to upload. You are currently stuck with 'framexxxxxxx.png'. So every time you export an image, you then have to go to the storage app to rename the file. Would be great if a rename dialogue would pop up before exporting the image.