DISCLAIMER: Liftoff is just a temporary name, there's probably a load of other maps with the same name already. Also I started working on this before Doomsday, totally didn't steal the rocket launch idea from Valve.
3-Point (including finale), single stage payload. BLU pushes cart full of Australiam to RED's base, at the end the cart falls down a tube into RED's rocket (harr harr), fueling it, and sending it off to space.
Concept art probably not drawn to scale.
First real map done by me, hopefully it comes out alright.
EDIT: Pictures aren't uploading for some reason, so here's the concept:
that height advantage before B will be a nightmare for defenders. I like how you seperated the areas between A and B, good planning for optimization. The only thing I don't see is the pathways on the interiors of the buildings and between A and B: there's no way to tell if there are adequate routes and flanking routes. overall, looks good for a first plan.