A big plus of the newer galleries is that once an image is successfully posted there, it won't disappear. (At least, I think that's true. Am I right, @RadioRob?) In the Legacy Gallery - and any of you who go there will have noticed this - links break and photos go missing. In many of the older threads in the Legacy Gallery, almost everything that was originally posted there is gone.
As a contributor, there are still some features of the Legacy Gallery that I prefer - for instance, the ability to include multiple images (a related series of shots) in a single post - but I'm contributing to the newer galleries too and, as with all things you give yourself time to get used to, posting there gets faster and easier with practice.
One criticism of the newer galleries that I've seen but don't understand is the suggestion that they're hard to navigate. Don't bother looking at the thumbnails if you don't want to, just pick an album you're interested in and open it. You can then scroll down through the images in that album EXACTLY as you would scroll down through images in the Legacy Gallery. Or, you click on one of the images, and then use the arrow that will appear on the right of that image to go sideways through the images (back or forth once you are past the first picture).
For any of you planning to revisit the newer galleries and looking for new content, several images have been added to existing albums in the Pornography (Members Only) Gallery in the last few days, and there's also a new album - "He Can't Talk Right Now" - for the one or two of you with an interest in cocksucking.