What new modes should Overwatch do next?

Recently we found out that Blizzard is putting a Deathmatch mode in Overwatch. A lot of players have wanted that mode forever, and now it’s coming. But that has me wondering — how many modes does Overwatch need? More importantly, at this point is it lacking anything you’d like it to have?

Overwatch seems pretty diverse to me. The Arcade gives it a ton of flexibility, and new Brawls cycle in and out all the time. Beyond that, there are special holiday events like Uprising or Lucioball to shake things up. The Play Modes category on the Overwatch wiki certainly seems to argue that the game has hit a pretty diverse balance. I’ll admit, I’m at a loss as to what I’d even suggest.

Should they do a big horde mode where two teams fight not only each other, but endless waves of enemies set during the Omnic Crisis? A three sided fight where you put three teams of three against each other? Maybe put actual bosses in, huge characters that have to be taken down while fighting the other team, or even both sides coming together to kill the boss (one of those big Russian mechs, perhaps) before going back to fighting each other?

I admit I’m out of ideas. But you probably aren’t. Do you think Overwatch needs any new play modes? If so, what would you want to suggest?