Not surprising that one of the most common complaints mention the lack of content, which is entirely justifiable. Right now your paying $60 for the small amount of content that is there, with a mere promise that the content you'll receive later will justify the price tag. I'll be buying the game regardless day 1, because at the very least it's something unique.
Current gaming platforms - Switch, PlayStation 4, Xbox One, Wii U, New 3DS, PC