Interesting Hall of Fame picks, hopefully they'll begin to ween off of Basic and Classic as they revamp their new player experience the way it should be. I'm glad for the changes except I didn't feel like Ice Block has sufficient replacement just yet to justify taking it away from Control Mage, and I fear their natural response is to add more removal, which will be either too bad to see play or too good and ruin arena even more. Molten Giant is a great unnerf, I've been waiting for it for a long time, but I'm disappointed they didn't give the same treatment to Warsong Commander or Force of Nature, because those two cards being unnerfed and moved to wild would absolutely shake up the meta game and let even more old school, iconic decks become playable again.
I'm definitely happy they're finally introducing a tournament mode. It's something I remember wanting since Blackrock Mountain, not long after I first started playing the game. Hopefully it's intuitive enough to make IRL (or online but organized) Hearthstone play more accessible. Hopefully it wastes no time and gets people playing as much as possible, or give the option to let players have breaks. I know sideboarding isn't really a think in HS, even on the pro-scene, but maybe something like it could be incorporated for the tournament mode as an optional thing, would be interesting.
There's a Discord group called "Pauper Hearthstone" which is something I'd love to see make its way into Hearthstone's in-game system, it's based off of MtG's previously Online-"exclusive" format that's been growing lately, Pauper, in which essentially all cards from all sets are allowed to be played as long as they're of the "common" rarity. This opens the way for cheap decks and really classic, playing with your friends after school experiences, and I think it's a great introduction for new players, so hopefully Hearthstone learns from it and embraces it as MTG has. I'm particularly excited about the tournament mode because it'd make Pauper Hearthstone that much more viable as a way to play the game.