Eh... Im not neccessarily saying that I disagree with you, but Im not sure what the point is.
We don't know how big these expansions will be or what functionality will they add/fix. There were only a couple of hints and while I agree that the original statement paraphrased:"...people who buy before X will get the first expansion free, and as you know, our expansions aren't a minor thing" seemed to turn into "we did 2 10$ expansions for Sins, expansion means that it adds functionality, not how big it is" we simply don't know what precisely will be the case.
Either way we dont pay for these expansions which I think is a very very nice gesture, even if they indeed turn out to be DLC-like.
Yes, I agree that the comments about trying the demo version before buying a product are rather silly, provided that there STILL isn't one and while we were repeatedly told that there would be one coming eventually we don't know when or for what version (my guess is no earlier than 1.1).
If you dont like the game you can (unless you preorded, ya...) ask for a partial (75% I think) refund, which I think is also very generous. (look up EA or Steam refund policy..)
We shall simply wait and see. There's nothing more to do. It's in Stardock best interest (unless they intend to shut their Entertainment branch) to fix the game as much as they can and do whatever they can to repair their image and regain players' trust.