As a very enthousiastic user of your sheets and the owner of a very messy room I found something that might be useful: The option to add a very small line with the charactername and pagenumber/title on all the cheets, so that when I find a page somewhere under a couch that fell out of a book I immediatly know to whom it belongs. E.g: Bob - Spellsheet - page 2/4
So I'm no excelologist, but you can do this. I've had trouble with the CSII printing the tiniest little bit of page number on a separate page, so I had to go in and modify the Page Setup options on mine to be "Fit to 1 wide by 2 long" instead of the sheet setting of 41% (41% must be a tiny bit different on American and UK printers)
Anyhow, my message is, Page Setup is not locked down, so if you'd like to go in and put a custom footer in with this info, you can! Go to the Page Layout tab, click on the little corner icon bottom right corner of the Page Setup ribbon widget, and it will give you the old familiar Page Setup window. (You can also get here by clicking Page Setup after you do File Print).
Go to the Header/Footer tab, and click on the Custom Footer button. There are little icons, so I use the Excel logo which puts the filename on the left side of the footer, and I use the little tab icon to put the Tab name on the right side of the footer, and I use the Page # icon to put the page number in the middle. Now the pagination will only be within the sheet, so you'll get a CSI Page 1, CSII Page 1 and 2, CSIII Page 1, etc. But if you name your files with your name in them, this should work for you.
Don't forget to make the text really small though. Highlight all the text and hit the little A key, you can format the font. I made mine Arial Italic 6 point and they fit down on the bottom without obscuring anything.
Save your sheet to save these changes. They won't carry over to new sheets but for now it will work. In v2, there maybe another option.