>>3094228I'd say the show really became interesting with Mukuro's advent. Until then it was just a silly comedy with poor Tsuna getting naked and going on rampages, much to his embarassment.
But yeah, guys like Mukuro, Byakuran and I'd say most of the Varia are needed in something like Reborn if only to cut some of the nakama powah that can get a bit too much on occasion.
Byakuran is one hell of a troll. I wouldn't be too surprised if the real reason why he wanted to take over the world(s) was only to transform it into a giant, fluffy, delicious marshmallow.