In an interview with Kinda Funny Games, Shuhei mentioned that they focused on the gameplay first. They wanted to nail the "minute to minute" gameplay experience before expanding on the other aspects. He also said the game has been in a playable state for over a year now. So I don't think we have to worry about that.
If anything I am a bit more "concerned" how in depth the RPG/Story elements tie in to everything. I want this game to be everything that it promises to be. I'll keep my expectations muted so I can be blown away when I finally get to play in next year. Can't wait!
I find the story concept intriguing, but I have no faith in videogame narratives. So I tend to have low or no expectations for any game that comes out regarding their story, this way I'm never disappointed.