This is a technical note; it would be nice to be able to upload images in WebP format. The compression is better than either PNG or JPG, the quality is as good or better, and it's compatible with about 95% of the web browsers in use these days. But you can't upload 'em to the forum -- it says "Invalid file" when you try.

Not super high priority, but if this is something that could be turned on easily that would be great.