For the Asymmetric Boogaloo contest (Trust me, this is asymmetrical).
This is a pretty simple map where BLU's objective is to carry the payload up BUT they figured it would be faster to send it directly up instead of carefully pushing it up the ramps.
Trust me, demomen and soldiers shouldn't be overpowered in this map.
Here, have a video showcasing it (terrible choreography but it should still show things clearly):
Asym2 pl_adamantium A3
Because a horizontal payload map is too mainstream.