Regarding giving season 1 episodes a "9", it's why I re-evaluated my own personal rating system over the hiatus. I was so excited for new Star Trek (hell, most of us were), that occasional overgrading would occur. As a result, episodes that were a 5 or 6 got 9s and 10s (from my perspective).
So before I started watching this season, I devised my own internal system where I could watch the episode, remove the excitement like a candy wrapper, review it with a more critical eye, and then put it back in context to get an overall feel for the episode. The end result is my "Genuine" rating, so that if it's a "Genuine 9" now, it will be one next week, next month, next year. It's not perfect, but I'm hoping it will help with the unintentional overrating that occurred with me in the first season. That's not to say there were not excellent episodes last season, there were a few very good ones, but I tended to push the envelope because the whole thing was so exciting, even if the episodes themselves were often mediocre.
I still stand by my season 1 episode 1 and 2 ratings, though.