Not impressed so far. I found it boring.
i think it does have potential when the hero power and item choices at beginning, and treasure choices Mid game widen, but Ive already found myself not wanting to go back to it after finishing the quests. I also have dusted my older sets which leaves me missing older cards.
All in all, I think this mode is going to like wild for me. I’ll never ever play it, and largely ignore its existence. I hope I’m wrong, but there’s a marked contrast between my immediate enjoyment and excitement over BGs, and this.