I was a little late to the party, but up to speed now and have to agree, after a slow start, it really is a very good show.
I commented in the 'what are you watching' thread, that following a time jump between S1 and S2, I hoped that would happen each season, eventually leading to current day and the future with space travel at an accelerated level, and following the Mars teaser into the 80's it looks like that's what they're doing, which makes me think this really could be an epic show. Really looking forward to S3 and future seasons.
It will be interesting to see how/if they introduce new stars though, as the initial ones will simply age themselves out of the show.