Indeed - I'm one of those backers. For some reason I haven't seen this thread while the campaign was still running - I never would have backed the physical version if I had known the disc would only contain a Steam installer. What's the point of a DVD if you have to be online to use it? If I wanted to have the Steam version I would have backed the Steam version...
Please at least put the GOG versions for Linux, Mac and Windows on the disc - you can still tell people that they need to register their copy at GOG or Steam to get updates...
