I bought Gallery way back when it was first released for public . Been watching it every day growing into better gallery add-on and impressed how much work was put into it . I am still waiting for only one feature or someone to tell me how much would it take /cost to implement that feature .
The specific feature that @iTuN3r suggested in that thread was actually satisfied by this new feature, which appears in 2.1:
(You'll need to view full screen with HD 720p enabled to see it clearly).
And to answer your question that you posted on my profile, 2.1 will be released as soon as I feel it is stable enough (which it is right now) and I feel it has enough new features (got a few in mind).
A public, downloadable beta / RC will be available before full release.