Thanks for everyone's input here - I was starting to wonder why nobody had opinions about the new gallery yet!
RockelMan - I have updated permissions so you can delete your pictures now - let me know if you find otherwise.
Valerie/Iwar/Stewart - thanks for clarifying the next/previous issue with not staying in the members' gallery. I see it too now, and will work on finding a fix for that. In the meantime, you can use the 'slideshow' feature to view all of the pictures in a member gallery as expected.
Keep the comments and suggestions coming - we definitely want to make the site as good as we can. The primary idea behind the gallery is just to make it easier to see what is in it. with 3,500 pictures in a big bucket - it was getting hard to navigate.
We shouldn't be losing any of the features that the old gallery had, just getting a bunch of new ones that make it better, so let me know what else is missing from the old gallery and I'll do my best to fix it.