All member galleries are in one forum (called Galleries).
Each member gets one thread in the Galleries Forum and that is their gallery.
Each Post is an entry in your gallery. Uploading is exactly like attaching images to posts.
Clicking on images will work like it does in this thread. (you can scroll around and see all the images in the entire thread).
Members can only have one Gallery (Thread).
Only the Thread starter can post in the thread.
People can Like Posts (Gallery entries).
I guess this is somewhat similar to XFR albums ?