I don't preorder anything, or buy anything until way after it's release, anymore. I haven't been burned, myself, but I know a lot of people have been. I also don't trust any trailers made by the company. They're either pointless cinematics that tell you nothing, or carefully curated sections. They're trying to sell a product, after all.

Trust me, wait until a game has been released and plenty of reviews have come out for it. That way, you know what you're getting into.