The more I think about it, I would prefer DC Direct making these than any other company. DCD could give the sculpts the size differences and detail these designs would need without collectors having to break the bank to buy them.
While HT versions would be very nice indeed, they would need to make roughly 17"-18" bodies for some of the characters and I'd dread to think how much they would cost!
Plus HT aren't really known for full character line-ups so no doubt we'd only get one or two of the main villains.
With DCD we'd have a good shot of getting all of the characters in great sculpts plus characters from the game sequel too. I hope someone from DCD is reading this!
I love the game and the designs so much (even though I cant beat it on 100% grrrrr) I hope we do eventualy get figures from it.