A2 sees several changes to the initial design;

-SPAWNS
Spawn rooms have been moved from the counter-clockwise side of the buildings to the center, still on the lower floor, to make accessing both routes quicker and easier

-FLANKS
Flank rooms have been shrunk significantly with the addition of impassable glass walls to add detail and deal with overscaling

-GARDENS
The gardens now each have a small garage building to take cover within

-ROOFTOPS
The rooftop battlements are now larger and have more cover, including a small building for snipers to sit inside as a defense against flying soldiers.

-POINT
Point itself has been unchanged but the paths next to it both have much more cover in order to give non-snipers somewhere to stand safely as well as to accommodate the new larger rooftops