Do goofballs use only michief interactions in your game? Mine do all the time since latest patch. They don't use any other interaction, not even funny ones.
I think it is kind of annoying that certain traits cause Sims to do certain actions a lot. I like the trait improvements, but I feel like the traits need to be balanced a little more, especially for Goofball and Neat Sims. I love that they act more like their traits, but I also want them to still be able to do other actions sometimes on their own too.