Comming from yugioh and pokemon tcg where you could atack any turn, (provided you have the energy for it in PTCG) I’ve always found it a little unsettling that you had to wait a turn to attack on MTG or HS.
I guess it’s the different mechanics that make those games need a “warm up” turn for minions/creatures. I didn’t (nor will, at least at the moment) consider what would change in the game if you didn’t have to wait a turn to attack, but I know that I would be more comfortable