I'm a bit on the fence with Misty Step + Thunderwave because of the abundance of "I win" locations for that combo. The combo can still be pulled off next turn after the target has had a chance to react to it or at least smack you in the face for teleporting next to them.
Was action economy on that list? Like how Thief subclass and the Fire Circlet grant extra Bonus Actions? I think they should stop fiddling with the action economy like that. Things like always Dash or double Dash can easily break the game. More actions per turn simply does not lead to more fun or better gameplay in this system.
