I was blown away by the quality of S31 files. I did find the first four episodes a bit confusing but I stuck with it and the first couple of seasons were fantastic.
I was rather blown away by how well Busby took the temperal cold war, which enterprise had essentially abandoned and made it work much better than that show ever did.
I really liked the future narrative of the observer looking back on history and the hints of what was to come in the series but also how they were realised. The on going story appears to have been planned far more thoroughly than your average tv show.
I do however feel some of the episodes suffered from being compressed into a twenty minute format and leading to opitunities for more character depth being lost, and I do feel at times the crossovers got a bit too much.