NOTHING is fun to play against
The inevitable complaining phase has just begun. People say that X is unfun while thinking that they are playing this super fair honest deck. Let me tell you: no deck in this game is fun to play against.
Of course ziliax is not fun to play again, resurrecting him 3 times is bullshit, however do you think that playing against pirate DH is fun? being control deck when you can play like 4 cards before you die on turn 4, not even feeling like you played a game of hearthstone against insane rush of DH, and even when you win it's like defeating bed of chaos in dark souls 1, you are thinking "im glad it's over".
What about painlock? is it fun to play against when someone cheats out the win by slamming 2 molten giants and bunch of other bullshit? not fun to play against. Maybe drill rogue? losing because your opponent got absolutely insane rng from scorpion has to be fun right? nope.
Combo rogue is not fun too right? who wants to die to lamplighter dealing 25 damage in one turn. But there are some players that would like you to believe that they are playing this super fair and wholesome elemental shaman, guess what, this deck also plays lamplighter and plays skarr to kill you from hand, among other bullshit, it's not that much different from rogue.
So what's the conclusion? None of the decks are fun to play against, if you are pointing your finger at some other deck for not being fun then you have to know that your deck is also not fun to play against.