Fairly fine experience aside from the fact that one doesn't get rid of the large white borders around the images in the lightbox when pinch-zooming. I prefer the image to occupy as much as the phone's screen real estate as possible. Can that be addressed?
In a word, no. One fundamental difference between a Laza lightbox and the lightbox script I'm using is that, in my skins, nothing ever overlaps the slide images - no controls (except for some optional hover arrows), no captions, no image counters, etc. But that also means that once the lightbox frame (and its aspect ratio) has been established, the image can't "bust out" of that frame and go truly fullscreen.
That demo album is a very lean, stripped-down experience, but the skin has to accommodate more complicated things. An example, which will perhaps give you the flavor of the problem:
https://jefftucker.jalbum.net/LBframe/
Notice the borders, the metadata popup, etc. Imagine what would have to happen if you suddenly wanted to show the image in a different aspect ratio. The script would need to completely repaint the frame in response to every user interaction. It's just not geared to that.
The Floatbox developer is, like me, now over 70. I managed to drag him out of retirement to address a few things a while back, but he has now irrevocably washed his hands of it. I don't blame him - I'm rapidly heading in that direction. Who wants to spend his final years engaged in thankless tasks?
. I'm sorry we're not compensating a hero like you economically, or a pony... 
