Exactly, everything that can be bought now will be available in game and the LTI that was part of some early offers allegedly isn't going to be a big deal. I really don't feel pressured at all to back earlier rather than later. I will probably end up backing like the very last day a 45$ pledge is going to include the full version of the game (technically 40$ for me as I got a discount when I tried the Arena Commander module with the Dragon*Con code).
About the video, I have seen it already (actually watched about 20 times and analyzed all the info), but there are still a lot of things that we don't know. Most importantly we haven't seen how it will work out in practice and if I learned anything about computer games is that many things can sound good in theory, but work very poorly in practice.
I know I sound like a total party pooper, but don't get me wrong, if you are completely confident in the success of SC by all means back the shit out of it. I just don't feel comfortable giving money before I have a clearer picture about the final product.