Wow, excellent job Justin! All the coding stuff is going way over my head, but breaking stat limits and stuff is really cool! :D This will be really useful for CT+, since Z is planning on breaking stat limits. And I agree, if you can find a way to shift the ATB to the right, you should have enough room for 3-digit MP. Not sure about 4-digit HP, though... :/ Maybe shift the thing that displays names to the left? Although that may cause problems with displaying monster names... :/
And yeah, if you can break MP/HP, I'm you can probably break the damage limit, but I'm not a programmer, so I wouldn't know for sure. :/
Sorry I can't contribute, I suck at programming. :( But this certainly is quite interesting! I'm sure you'll be able to figure it out! :D