A new version of Gallery was released today, and it included the fixes that we needed! As I previously mentioned, there was an issue with the previous version that prevented uploads from PostNuke users. Now I'm able to allow uploads into the photo galleries, so you should be seeing some new images soon.
I'll create album categories as needed, so if you think of any category of photos you'd like to see, let me know. And if you have any photos that you'd like to upload, and I haven't yet granted you the ability to upload, please let me know as well...