Monster level up patch

I use Excel (well, Libreoffice Calc) all the time for balance stuff like this. It's a great thinking tool. For the record I'm interested in this in the same way Lockirby, I think the idea has potential but is hard to pull off well. I can't think of any games offhand that did this well and that you could model but I'm sure examples exist. In any case it's an interesting technical challenge.