Less RNG based cards. All it does it reward the lucky.
Less one-card combos that can win by themselves. Nothing like winning 99% of the game, then someone playing one card and the RNG gods ripping it out of your hands and putting it to theirs, because, reasons.
Better rewards for clearing Heroic level content. Getting a card back is rather underwhelming. Atleast some packs or something.
Larger deck minimums. Decks are way to consistent. Seeing the same decks with the exact same draw, card for card, gets stale.
More tribes and synergy with them.
The "single mom" spam posts appearing to be banned.