....and probably more importantly, would prevent the aircraft weight from settling on, and damaging, the nacelles. Pick it up, dust it off, and start all over again.
What's probably most newsworthy about the comparative technology is how little it changed, in the gross details, over 70 years. Hydraulic folding things, with angled stabilizing struts, and changes in orientation to accomodate fitting into different parts of the aircraft. The one major conceptual change is that the A380 main gear can steer a bit, to accomodate the long wheelbase.