after watching the pilot i've been doing some thinking and i've realizied that certian events that we know of have not happened yet it seems that at this point the 12 colonies are not unified but are all seperate nation states for lack of a better term. So i suspect that we might see the events that lead up to this being set in motion. We might also see the events that are the basis for the painting in adama's quaters on galactica set in motion too since it show cylons fighting each other.
Also we don't know when the cylon war began or how long it lasted so we might see the beginings of it or at leas the events that trigger it over the course of the events in the series it all depends on how the passage of time is handeled in the series.
Also i think seeing William Adama grow up will be an interesting and will reval alot about why he takes certian actions.