How about something with a template that calculates square footage, shows panel sizes, etc?
Create a LTR template in InDesign with fields for customer, designer, date, revision history, etc. and in the main area place a PDF of the actual art proof, export the whole thing as a PDF with all colors converted to sRGB, downsampled to 96ppi, fonts embedded, read only.
How about something with a template that calculates square footage, shows panel sizes, etc?
Corel has tools to show panel sizes..
Illustrator has CadTools by Hotdoor to calculate square footage and panel sizes.