Found a minor bug. When traveling between worlds in Creative Mode, any empty slots in your hotbar refill with the default ones for that slot. Annoying when you also can't empty your inventory of items not on the hotbar without a table or anything.
Also, I'm sure he couldn't list every single early player. What the list actually means is a mystery, but someone actually add their ingame name to the list and play to see if anything is different. It might just give a different ending dialog. It seems ending dialog is in the win.txt... I was about to check it, myself.
One more thing: Is the skin of the Enderdragon Egg called "crystal?" And what is beam?