What do you mean? You can add comments to gallery images and the old xoops comments associated with the imported images are there too.
Oh, you're right. You have to be logged in to see the comments. I guess I never looked at the gallery while I was logged in. I typically log in to post and immediately log out when I'm done, as I'm often on shared terminals.
Since that's resolved, I'd say I miss the mod points system we had.