In general, its better for Magic to err on the riskier side of making cards being a little too good rather than never having to ban cards (you can only play it safe when youre not innovating, and if youre not innovating, youre stagnating, the riskiest thing a game can do)
"The Baby and the Bathwater"
Kaheera, the Orphanguard Bringing the powerful banned in Standard companion mechanic, Kaheera, the Orphanguard sees play as the companion in creatureless decks like control using manlands and planeswalkers as win conditions
It's Survival of the Fittest for the graveyard
Partners and Companions Ben Guilfoyle is taking a good hard look at all the options around and about Partners, Companions and everything in between
Ever since Megrim was printed, the casual world loves them a discard themed brew