Photos integration limitation impacting SmugMug integration

According to SmugMug (a service that I've used for a couple of years now), the integrations available to the Photos app have a few limitations, including only allowing 10 photos at a time from being uploaded. These limitations didn't exist with Aperture and there was a pretty seamless integration between Aperture and Smugmug as a result. Smugmug is willing to develop an integration for Photos, but with this limitation in place it would make it very clunky. Is this limitation really in place? If so, I'm really disappointed since the only reason I can think this was imposed was to push people to use iCloud. I very much want to continue using SmugMug since I enjoy their service and it works well for my needs. Is there any path towards a solution that would allow for a SmugMug/Photos integration? This impedes my ability to use Photos for organization and synchronization with SmugMug (without clunky workarounds), so otherwise I'll be starting to search for an alternative to Photos.

Thanks, Ben