Hi, guys,
Thanks for your patience. The new UI framework is in. Please do some testing and I'll write up some quick docs on how to write your own ImageGallery UI. I think you'll really like the API I've created. Lots of room for expansion, too.
Also, syndication of recent images is now available on all page types via a decorator.
$RecentImagesGallery (will show 5 images from the one gallery in your site tree)
or
$RecentImagesGallery(10) (will show 10 images from the one gallery in your site tree)
or
$RecentImagesGallery(5,some-gallery) (will show 5 images from a specific gallery, as referred to by URLSegment)