It doesn't have to be a serious one where you get timed or anything, just something to do while bored in the lobby really.
There has never been an actual parkour map in the lobby made in bedrock edition yet, it's a shameI would like to see this, in previous lobby's there always was a parkour. It's fun to do when you're sitting in the lobby, I think because of the seasonal lobby they removed it. I hope it will be back soon.