They're resetting all mutes next patch which should be today/tomorrow and adding a different algorythm and some other shit. Since it's still automated it's probably still going to suck to some extent I guess, but for example if you don't get muted for 2weeks it reset your mute counter so you don't get muted for a week right away on the next reports.
They've also finished the tutorials and added low hero pool mode which is pretty great for learning the game, it's only fairly simple heroes but still a decent variety(20 heroes with stuff like lich, lion, warlock, VS and witch doctor for supports, no disruptor or AA for example which require quite a lot more skill) so it lets people familizarize themselves with a smaller pool of heroes and learn simple abilities to get into the game.
Sadly, still no Abaddon.