Alright, decided to write a more detailed reply than just leaving a link to this topic: 🔥 34.0 - Highlights & Known Issues .
In particular, the issues discussed here have been reported and acknowledged:
Ironically, the Paladin quest isn’t listed as banned. 
Oh, and it might be the issue of cheaters again, I dunno. Can you add it to the deck normally now?
I’d be careful and wait until they fix those bugs, perhaps. Don’t wanna stumble into any annoying bugs with no rewards, don’t wanna play against bugs or cheats… And I’d advise everyone else to exercise caution as well, at the very least.
Yeah, told you it’d be the next candidate (for a go-to ‘OP’ deck based on old cards to farm the brawl with, if you want to) to come to my mind.
Dunno, over a larger amount of games, it might be worse without the Sketch Artist, at the very least. I’d say that’s the biggest loss compared to the ladder version, other missing cards are more of extras — since other decks are weaker, too, it might not matter in the end, but this one makes the quest less consistent than in Standard.
PS Having done the ‘Ranked’ weekly quest and ending on a high note, so to speak, for once, decided to stop there (maybe it’ll be the final positive memory of this deck, who knows)… So, I suppose, there’s no rush and almost a week — or whatever remains of it — ahead to play the brawl… Provided, hopefully, they fix it. Gonna wait a bit for now, then we’ll see what happens.