After two 2-3 runs, I pick a 70.9 Pala-Warlock deck and reached my 1st ever 12-win after nearly 1000 games. Since then, my runs have been decent with 9-3, 3-2 (Arena closed), 9-3 and currently 7-0 with a mid-range Dude Pala. Thank you @Sherman1986 for pointing out my problem. When I pick an excellent deck, it improves my mood and my play is correspondingly more precise. I love this Arena.
I have a mixed opinion on it. My current warrior draft has 4 Direhorn Hatchlings and 2 Fool's Bane and I'm 4-1 so far. Glad to hear people are having success with it. Sometimes this community can find it hard to accept these sorts of changes and it can be almost toxic but really (as someone who has only been around since the release of Rise of Shadows) this is so interesting to see all of these weird and wacky cards. Other times it can be a pain in the ass not having your standard inclusions like Flamestrike or Shadow Words.