Well, he did sort of learn he wasn't ready to kill Lois and rule the Earth in the two parter "Stewie Kills Lois"/ "Lois Kills Stewie" so I guess that caused him to back off a bit. However, the ending of the evil clone episode indicates the Brain killed Good Stewie and took Evil Stewie home so who knows what will happen next.
Yeah, they've kind of dialed back Klaus' attraction to Frannie and now he's kind of insecure and worried about if the family likes him or not.

What's great is the old episodes are airing on "Adult Swim" so we can see the classic Klaus some more.
Oh and I nearly forgot the one thing your Roger scene is missing is the part at the end where he starts crying hysterically and runs out of the scene.
