I know that. I have my own personal reservations as to how effective those short films will be, but in general I don't think many people are interested in sitting down and spending an hour or whatever digesting exposition so they can play and understand a video game.The first stretch goal is actually about that, explaining the story so far in short films so you can just jump in.
If only everything was clearly explained on the Kickstarter page.
They need to talk gameplay. Explain what Shenmue is. All of their messaging thus far has emphasized the story and legacy of Shenmue, which is fine for hardcore fans, but means nothing to everyone else. Whatever they did fifteen years ago to convince people that Shenmue 1 was cool, they need to do it again. It's not as revolutionary as it was, but there are still plenty of quirks and mechanics that make Shenmue unique. That should become the focus of this kickstarter.