That's what demos are for. Or just ask one or two YT people to make a brief gameplay video of the first ~10 mins of the game and provide a summary of the rest of their experience.
I don't feel the 'episodic' games format has been successful in the market nor does it benefit game devs or consumers. Sometimes game devs might go out of business or otherwise be unable to finish a project and then you're left with an incomplete story without an ending. Been there far too many times to like the idea of 'episodic' stuff anymore.