Good work! A PDF version would indeed be nice. Also, have you submitted it to the documents section yet?
Note yet. I'm just posting the pages as I finish them. Once they're all finished, I'll submit them as a single PDF (if I can get the size down, if not - then a zip of all of them as png format).
The only thing I can add is to possibly give the hex opcodes for each instruction, unless that's one of the coming sections?
Like this ?
http://alexandria66.2mhost.com/~pcengine//pce_cribsheet/Otaku_no_PCE_cribsheet_page2_WIP_0_1_1.png 
(Still a work in progress).