To be honest, I actually love baby Poof. Although it was strange how they suddenly just added him, I was really excited about him. I though he was finally gonna break the whole "Timmy makes a wish and everything goes wrong" thing that really got repetitive. But the new were really horrible, specifically Kevin Sullivan. I love how Poof would sometimes bring a little cute humor.
The things I find wrong in the new episodes is the characterization and the overusing of Cosmo and Dad. What happened to all the development of TootieXTimmy and TrixieXTimmy? What the HELL happened to Timmy's parents? Timmy became such a spoiled brat. Cosmo got really dumber that it's just not funny anymore. They completely ruined the show with all this horrible characterization. And they really have to stop relying on Cosmo and Dad anymore. Didn't everyone used to have some knowledge before? Now, everyone on the show is practically stupid and instead of being the least bit normal, they all became worse than how they started out than in the beginning of the show.