Class that needs most buff / nerf - that really depends on the game mode. There are decks that are powerful in ranked, but pretty weak in arena and vice versa. Ra, Ganesha, Al Puch are very weak in arena because they need specific cards / combination of cards to work. Ballena and Nu Wa are good in arena because of their hero power. Now the ranked scene is different - so can we have options to vote specific to game mode?