It's definitely something I'd like to do, but I can't think of anything that wouldn't make it more cluttered. I'm always open to suggestions though, if someone downloads the Excel version, fiddles around with it, and comes up with something workable.
I tried just that for you. I tested these out on my worst printer (Black and White/8 years old/900px x 1300px) - and they all came out rather well. The capital ships one was a little squished, but it managed to still come out legible without any hitches.
Printable Charts.If anybody is having any problems printing these in any way, let me know right away. I'll do my best to either squish them down further, or to crop them even further so that they work for even the worst of printer resolution sizes.