I just started my constructed season today and haven't played too much yet, but some random things:
I have drawn Deck of Lunacy a single time in a game. Thankfully playing Incanter's and burning face is quite good.
Getting a 1/1 from Apexis makes me sad.
Even in the dregs where I play everyone is playing the same 2 decks. Lunacy is obviously getting the nerf hammer - but what will they nerf in Pally?
Speaking of, I continue to shake my head at the HS boomers who still complain about Demon Hunter (no skill, OP cards, etc.). For someone newer to the game, Paladin has been Tier 1 in standard and wild for nearly my entire experience and was tier 1 in Arena for the majority of it. The top 3 decks in the lower ranks are all Paladin decks. Secret Paladin has exactly 1 sub-50% matchup in the garbo ranks. That class is dumb.
If you are playing Arena and get Priest you should be drafting every single Draconic Studies you see. The quality of dragons, especially in Arena, is absolutely through the roof with DoD gone and the Core Set in.
Speaking of Arena - micro adjusts are going to be coming soon. Blizzard is going to do what they always do and make DH unplayable and buff a couple cards for bad classes to get them to be better. What they really need to do is, other than with legendaries, stop using the rarity of a card as the most important (and sometimes if feels like only) factor when figuring in offering rates. Why are class cards that happen to be Epics like Nagrand Slam and Warsong Wrangler in under 8% of Hunter decks yet Protodrake (which is better than Wrangler and slightly worse than Nagrand Slam) is in over 20%. Give classes in Arena identity so games don't feel so same-y (one of the appeals to the format) and stop putting the too-strong neutrals (Proto, Claw Machine, Magescribe, Far Watch Post) in 20-25% of all decks.
In BGs, I would like to see them take the opportunity that adding Quillboars into the format gives to temporarily remove Demons (or perhaps Mechs) and give them a full overhaul. Also, for the love of all that is good add a damn PTR so we can playtest changes and keep things a bit more dynamic. I will say though that, while a lot of people seem to be down on this meta, I am having a good time and still find it so much better than the wretched spells meta.
Lastly, participating in tournaments lately has been a lot of fun. Blizzard implement a tournament mode in all formats you lazy goons.
Don't want this to seem like a list of complains (rather than just discussion) as overall I'm enjoying HS lately.
P.S. Oh, does anyone know if golden packs (like the golden classic mega bundle) adhere to the guaranteed legendary in the first 10 rule? Not planning on getting it, but if it did then getting ~7500-8000 dust makes it not the worst value I've ever seen from Blizz.