I have some files stored in my iCloud Drive, and to get to them with photo explorer I have first to copy them to the camera roll, then access them from there. Saving a step (and file duplication) would be awesome

Of possible, would you please think about integrating ODFS from Microsoft? I really like the Onedrive integration, but the ODFS Accounts will fail, since the Authentication is different.

Display photos recursively (show photos in subfolders) in a slideshow would be great.
Setting up slideshows one folder at a time is very time consuming and the only way around this is to copy all photos into a new single folder.

Add Loom to supported services.

Dropbox is available as an IAP and it's great. Copy.com is a nice Dropbox alternative, would be nice if FlickStackr integrates it too. Thanks.

For security reasons, having the option for FlickStackr to have access to only one specific folder in Dropbox.

It would be great to have a preview image instead of the blank folder icon in google and skydrive storage. Just like it is in the skydrive app.

We have contextual information about the photos stored as tags and we'd
like that text to display during the slideshow so we can see that info
while watch it. Any slideshow that displays the tags and photos
simultaneously would be great, regardless of full screen or not.