I was thinking about having a like a wheel of fortune but then with decks, so each player chooses from their 5 decks they think they are the strongest, put them in the wheel, where the arrow of the wheel lands that deck will you play with, this would then also be a battle of 3 times just like standard ranked matches. but each match will be a different deck. So you as a player have think about a different strategy at those moments against your opponent. Then the other suggestion is about brawl.

I know there has been more questions asked for a ranked brawl, in my opinion it would be great, as well for new upcoming players, where brawl(commander 100 deck) is used for the format ranked. Would for us players that like rank and to see how good they can measure them self with the best eventually. What could improve your way of making decks, of how to use particular stategies etc.. this would be good for new upcoming players, because brawl or basically said commander, is now one of the most played formats in mtg (irl). So that also for them that they can improve thems self. and understand the way of playing magic.