I should be able to insta-kill every single Bugbear, Hobgoblin and Troll in the game.
Come back to me and complain when we have some real Epic monsters to fight. Monsters that should have defenses against common spells....just like we do.
But hopefully, our wise DMs will still give us hordes of minions for us to blast out of existance too.
(on a side note, the complaints about arcanes insta-killing non-named Epic monsters would carry more weight, if people didn't routinely do everything they can to run through epics and avoid fighting any of them to begin with.)