Yeah, I wouldn't call them good, but they are playable at most. I only like them for three reasons:
1) The characters that use them in the show
2) The fact that they're severely underused (and the opponent would never expect them)
3) Unlike all those broken meta archetypes, Sharks and Junks are very balanced and have healthy design (minus the fact that they're ridiculously underpowered, haha)
Ah. I heard that one of their monsters can now do some sort of "auto fusion" without the use of a spell card. I have to look deeper into them, though.
Oh, dang haha. Battlin' Boxers (I call them Burning Knucklers, lol) aren't that bad, but Six Sams are definitely stronger. But 60 cards? Is that including the Extra Deck? It would be hard to imagine it being consistent with 60 cards in the main deck. (The only 60 card deck I've ever seen were Lavals, haha.)