I have this strange feeling that even though the style and spirit of the series is obviously going to remain the same, peoples perceptions of it are going to wildly flucuate suddenly as of episode 5. I can almost see peoples comments on blogs being all over the place with "UGH It sucks now, they ruined it" or "Wow it's so much better now with a new director". I can hardly wait for the new drama to begin. Oh Joy!
Seriously though, I can't really see much changing. It's still going to be a 4Koma, Konata will still be the Lucky Star, they'll still be making fun of Miyuki for being nothing but a poster girl for Moe and they'll still be referencing games and old anime. Ultimately, I bet the pressure just got to him and he didn't think he could handle it like KJ said.