Forgot to answer this question: I can definitely to that, as soon as we can figure out a good UX/UI for it, that isn't too crazy to implement. Easiest for me would be to be a button that pops up a dialog that lets you select max resolution, and then any images that are above that treshold are downsampled to that size? Do you think that would be valuable?
It would certainly help many people who don't have the means to batch process the image assets themselves. Reduce the size as well as the color depth.
We were handling other meta data via a simple text file in each asset folder, adding that data as Tags/Description/Bounding Box sizes etc. The Babylon exporter does not include any of that data.
I would also love to see the opacity/transparency added as Enscape implements it.