So it looks like with this image system, the image retains the original filename which is great – that’s one of my small irks with the old system 
Being able to drag to pan is also very handy!
One thing I’m not a fan of though is the speed at which the image zooms in when you click the thumbnail. It’s somewhat a matter of personal preference, but I like the fast speed of the old system. In a thread with a lot of images, it’s nice to just get to the image quickly instead of waiting on superfluous animations to finish on every single thumbnail click. I would suggest making it match the previous speed
Thank you 