This is a beta, it's going to slowly ramp up, features are going to added. Like I said above, it's very possibly that in 3-4 years time we could get a license and build some content that blows you away. It's not a short-term thing. Of course the major things will usually come first, but really it is only loosely planned. We wanted to do the infrastructure and physics first, we're not done with them, but now the focus is shifting a bit to how it looks and performs. At this point, it really isn't a concern most of the comments for that reason, and that's why replying to them isn't worthwhile either. People want those things now, and in the real world that's not possible.
I've dealt with this same need to change perception when I've worked with another dev. This isn't quite the same, but it is the same need to accept this not being boxed and done.