There are two less obvious details that I particularly like on display in this picture, one of which which I noticed at the time, the other I didn't.
The first one is the way it captures the realistic silver glint on the barrage balloons.
The second one is the one I didn't notice at first, which is the dockside crane in the act of loading or unloading the ship visible under my Spitfire's rear fuselage, in the Royal Victoria Dock.
Dull grey-brown textures for dock areas and long, simple low poly quayside warehouses, in place of what's there now, would be even better.