The 07-10 was a very interesting one indeed for two reasons.
First of all, the way they openly talked about all the recent events including the Sashihara move and Acchan grad. They make fun of it and chat about it openly and lightly, which is something you rarely see in the world of idols. Even though we rarely get the true story behind a lot of stuff, AKB48 has always been more 'open' and 'real.'
Secondly, this episode proved that you don't need a lot to make a funny show. The level of AKB48's shows has decreased a lot of the last year, including Nemousu, Shukan AKB and even AKBingo (which seems to be on the rise lately again though). I think a lot of it comes down to the girls. Ariyoshi is great, and when you add in natural talents like Kojima and Sasshi it's a guaranteed success. Yui was great too. Ooya wasn't bad either, but I think she was a little overpowered this time. I think she's more comfortable in a different setting with different girls.
Conclusion: put the aces back in the other TV shows!