Anyway, BS is fine. Bloodrage and rupture are two of the best spells in the game and I really can't believe the smack talk BS's toolkit is receiving in this thread. Even if you didn't move at all during rupture in a team fight it's still virtually a Lion/Lina ult with a force staff and will put a support down to 30% and force them to hold and not help their team just to stay alive. Not to mention he completely disables any spell caster he picks permanently and runs around at 500 movespeed because of that support hiding in the back ruptured at 20%. I've really never seen BS have a bad game, even when he gets stomped on early he can just jungle up an item or two and rupture > force staff + bloodrage will be worth a spot on the team.
Just don't trick yourself into thinking he can hard carry, he still needs a void to back him up.