Nemesis Draft proves that the game's balance is far better than the community makes it out to be
There are truly no bad champions.
Except maybe Yorick (and Nunu?), who's still good in lane and is being reworked in likely the next patch cycle.
People are giving the opposing team Janna/Soraka/Zilean and let's face it; they're all fine champs. Game balance is as good as it's ever been; competitive scene has just become better and better at knowing who's absolutely optimal (within the smallest of percentile).