I just downgraded my ratings for SZS from God-tier (10) to Genius-tier (9) except S1 and the BD special that came out earlier this year. Too much time passed that I can barely remember it, so I have to downgrade the ratings a bit. S1 still gets God-tier since it basically restarted my love for anime.
I hate how that happens. Time downgrading. I like to rate series just as I finish it so that the full impact of the show which is also that show's quality will be put into my rating. And thus Code Geass for both Borisu and I are top 10 with that scale.