Does anyone have a method by which I can export in Illustrator at <0.5x? It seems -- unlike Photoshop -- if I attempt to export @0.33x, say, Illustrator automatically and infuriatingly brings the export target to @0.5x.
Illustrator does not allow you scale at other percentages.
If all your artboards are the same size, you could take the artboard size and divide by the percentage you want. Then change the scale to width and write down the width that you just calculated.
Ex. Artboard size is 580px and you want .33x, you would change the scale to width and write 191px.