In the era of 3D printing, where layer thicknesses are measured in microns, it is ridiculous to have a material whose thickness tolerance is +/- 15%. Yes I am speaking of laser-cut acrylic!
I suggest a "High accuracy acrylic", with thickness accurate to +/- 1%. I would pay double for such a material! I understand that +/- 15% is the "industry standard", but this says to me that the industry needs to change. The first company to produce high accuracy acrylic is going to get a deluge of orders, IMHO.