Thanks for posting that link. Kingsburg is a great game to play, and I'm really looking forward to the expansion. This is an almost perfect game for those new boardgamers tired of playing Settlers of Catan and ready to try out something a bit more complex.
Thanks for expressing exactly what we (designers) wanted to deliver, and for enjoying the game of course.
The expansion will basically give you 5 tools (extra buliding lines, alternate buildings, alternate winter battle resolution, the Governors and the Year Events).
You can add one or more (or even all) of those to the "basic" game to shape your favourite game towards a more "gamers" approach (Governors, alternate buildings and winter), or just to add more variety for casual gamers (the Year Events, but also the Governors and the alternate buildings can be seen in this way). The two extra building lines are probably a welcomed addition to any approach to the game.
Myself and Luca hope you will enjoy it when it will be released!