I share the same concern and sentiment. Every time a game comes out with a major block of content - such as a full expansion - there is the golden opportunity for an influx of new players. The window for this is pretty short depending on word of mouth and advertising but the real deciding factor is how friendly the game is to the new players coming in.

I think it would be really good if the manuals were updated with new players in mind before the expansion is released to make the most of the in-coming window.