Despite how much I prefer PNGs over Jpegs, using them for thumbnails in the gallery wasn’t the best design decision. They resulted in some truly enormous page sizes (sometimes close to 2 megs if you can believe it!). Honestly, the only reason I’ve resisted switching over to Jpegs is because of the logistics of it. I knew converting 2000 sites over would be a huge job.
Luckily, I came up with a different solution that allowed me to use Jpegs for all sites today moving forward. Maybe at some point when I feel up to it I’ll convert the rest of them over, but that might be a far off day.
If there are any other little issues that bug you, be sure to post it over on the feedback page, http://feedback.dezinspiration.com/