Awesome sounding and looking, but mind adding a download?
EDIT: Thanks for adding the download, I'm going to play it now.
It still needs a good bit of work.. messages are cut off on a vanilla minecraft server making it hard to understand. Also, an RS-NOR latch on some of those buttons *like the ones that give items* would be a good idea to prevent command spamming.
I got a little bored after playing it and decided to render part of it: