Back when I thought there would be a 48 hour preorder window, I was thinking 10k. Now, it's anybody's guess...
I am very happy that the major characters from here on out will be accessible to everybody. This is a good move--the top ten most wanted figures should be ones that are (relatively) easy to get. Yes, an edition of 1750 Mauls would be worth a ton on eBay, but an edition of 10k means that more people can get into the line and secure a highly desired figure.
(I still think that the same 2000 people will be ordering, just not all at once. We might end up surprised if the number doesn't go as high as we predict.)