See why I wondered about Toriyama coming up with a new fusion? This new permanent fusion isn't permanent. Why? No idea. I'll bet my life Toriyama doesn't know either (I know there are later explanations, but at the time of writing no way did Toriyama know). So all it did was rob us of Vegeta doing a silly dance.
And oh, Vegeta hasn't changed much. Him destroying the earring is stupid, but at least in character.
Goku and Vegeta running around miniaturized inside Boo is really fun and silly.