I honestly think pre-ordering a video game is the dumbest possible thing you can do. It doesn't do anything positive for the game. The game developers aren't going to suddenly have a better product because X amount of people pre-ordered, they're still going to be doing the same work regardless of if 1 or 1 million people pre-order, it doesn't change anything. The budget for the games development is set in way before pre-orders ever become available, they have zero impact on the quality of the game, absolutely none.
It's quite amusing to see how many people (who would normally never do it) make impulse purchases on video games they're not actually 100% sure about. For example on the SWTOR forums, I've seen endless amounts of "I changed my mind, can I cancel my preorder?"
It's amazing how the hype of a preorder (even when the game is months and months away) becoming available makes people just go bend over and hand over their cash.
End of the day. Preordering the game isn't going to make it come faster, don't do it unless you're 100% sure and what you're ordering is in actual limited supply. Don't give into the hype of preorders. It might've seemed harmless to begin with, but now look at the gaming industry...PREORDER NOW AND GET BONUS HERPDERP! Glad I don't fall for this shit.