I really disliked the brain-of-the-week this time. The gossipy persona was odious, and it contributed nothing to the story. It used to be that Liv's personality changes served some purpose in the overall storyline or character development, giving her some new perspective that helped her figure things out or that created complications in her relationships. But the past couple of weeks, her brain-induced personas have had no point beyond silly antics. Liv doesn't even seem to have her own character arc at the moment, since the story is driven by everyone else's arcs instead.
I mean, I'd expected that her newfound tendency to gossip and spill secrets would've created plot complications because she spilled one character's secret to another character, and they would've gotten mad at her for the betrayal, something like that. Then it would've actually served some purpose to give her such a thoroughly obnoxious personality.
Also, why are Liv and Major the only zombies who ever seem to go through these complete personality changes? Zombie Blaine was always pretty consistently Blaine, aside from a few mild quirks from time to time. Blaine's dad and the dumb sidekick (Donny?) always seem to have consistent personalities. But Liv is so mutable that she sometimes seems to have no personality of her own, especially lately. Are they even doing her internal-monologue voiceovers anymore?