Never trust a baby with magical powers.
But seriously though: I think its really hard to judge Flurry Heart as a character, since we havent really seen what kind of a character she actually is. She hasnt really done much, other than basic baby stuff like cry and demand attention all the time. Doesnt help that she has pretty much no dialogue ("Gugu" does not count).
Im looking forward to episode 3 of this season, since MAYBE we will finally get a chance to see some actual character with her...maybe.