Not sure about 24.
It would probably be good if we support scales like 1.25, 1.5, 1.75, 2.0. If we select 16 as base. We get 20, 24, 28, 32.
Also we need some code to select the size automatically, but I guess this is doable in later wx's and it is a separate issue.
Yes, I'm looking the image at 100%, but the blurriness might be caused because the browser does some scaling due to my higher dpi. I've opened it in an image browser and it looks fine.