I did enjoy the demo quite a bit. Though it's definitely in prototype stage still. I like the style choice they're going for overall, I look forward to seeing how they develop other teams.
Hard to say how good it will be until we see it's big feature-the rogue-like campaign.
I actually respect that multiplayer is taking a back-seat(though there will be local options and online through Remote Play). Get the style and gameplay down really good for the first game, then you can make a more online focus experience later. I don't know how far they want to take the concept, but holy crap do we need another hockey game franchise(especially on PC).