Am I misunderstanding something? From everything I've read, the point of the Kickstarter was to fund a physical retail release of the game (plus whatever stretch goals are met), because Iga already had funding to make the game from somewhere else.
The physical copy you get from pledging $60 is just a special edition. You can still buy a physical copy of the game without pledging at all, though. I mean that's fine if that's what you guys are wanting, but if you're just pledging the $60 because you think that's the only way to get a physical disc copy, I don't think that's necessary.
At any rate, the game seems really cool and I'm looking forward to seeing more about it.