I enjoyed this brawl, but I think it could have used a few tweaks. It was somewhat frustrating to have essentially "dead" legendaries because of the rules. Cards like Reno Jackson, and Twin Emp are largely impossible to get any value out of because their effects can never be triggered. With others like Malygos, Gazlowe, and Harrison Jones having similar problems in only gaining any benefit in combination with 1 or 2 specific other cards.
In my first game, when I drew the Offensive Play card, I was intrigued and hoped there would be more similarly themed spells (e.g. Defensive Play: Opponent's Legendaries cost 3 more, Intentional Foul: Destroy a minion, etc.) With a few of these, potentially with a cost, or ones with a damage component, I think it could have opened the game up a bit more. As it was, I enjoyed it, but there were a handful of clearly dominant Legendaries, and a lot more that were just taking up space in the deck.