OneDrive Photos to include photos from Facebook and other services
The OneDrive virtual photo bucket is great and has great potential to exploit in the Windows 10 Photos app.
It would be majestic if this virtual photo bucket would virtually include the user's photos on Facebook, Instagram, Microsoft Photosynth, Twitter, Flickr, Google+ and so on. For fast browsing, local thumbnails are needed. This will make the user's life story more complete and provides more sources for photos to include in Albums for sharing.

Thanks for the feature suggestion. Just being transparent that this is something we aren’t likely to get to in the near future.