Just focus on the fact that if you can get S3 storage to work on attachments it will definitely work for Xen Media Gallery. Gallery images are no different to an image you attach to a post technically speaking
If you have any suggestions on how to improve this awesome addon, please take a look at the suggestion forum at the Xen Media Gallery site and add your own or add your comments to an existing suggestion.
Xen Media Gallery 1.1.0 has been released. It includes the following new features:
Videos. You can now embed videos in the gallery as media items. Embed code is generated by running video URLs through the XenForo BB Code Media sites feature. This means you can embed ANY media into the gallery as long as you have a BB Code Media site set up for it.
You can globally set which BB Code Media sites can be used for embedding into the gallery.
There is now a new usergroup permission for "follow gallery moderation rules".
This allows you to set users/usergroups whose items will always go into moderation.
When you install 1.1.0, this permission will be set to No meaning that all media will be going into moderation. You will need to set this permission (and the other new ones relating to captions etc.) for the gallery to function correctly