Thank you for taking a look at cards that need rebalanced and continued efforts on the newer cards such as quests while keeping in mind future cards to look forward to in the mini-sets. the cards in standard meta still need a bit more T.L.C. changing everything at once never did anyone any good.
i personally really enjoy the dual class tavern brawl and the reason most other people do because it is a setting which promotes casual gameplay in contrast to the seriousness of rankings especially when balancing of cards goes out of control.
as a suggestion maybe a mini game to expand on the foundations hearthstone has been building would add some extra flavor in the mix. something that is heavily mouse clicky or keyboard mashing using things the game already developed to help relieve a fraction of frustration people are experiencing. it may easily be done with cosmetics, portraits,pets, or whatever gameplay mode items serving as fun minigame fodder ,but primarily used in other modes as eye candy while giving another reason for collection and indexing rewards.
sorry for the wordy post to thank you with suggestions and wish the blizzard team luck on their diligent efforts.