It would be nice if more game devs made available beta/alpha versions of their games for the Mesa developers, so the games are fully supported when released. On the other hand, I guess the developers are busy enough as it is.
More importantly, this is a great opportunity to get the Linux gaming community noticed- you'll see that there's a bar showing how many pre-orders there are so far. If it gets to 2000 before May or so I believe, they'll add extra content to the game.
Wouldn't it be great to have a headline like Amnesia gets extra content thanks to a surge of Linux pre-orders?