There is always more interesting detail to follow (if you are so inclined) in most aspects of this sadly discarded aircraft.
I seem to remember that the tendency to bounce on VL required a fairly crude fuel bypass modification to the complicated fuel control system in order to achieve rapid wind-down on throttle closure.
The castoring outrigger wheels sometimes stuck at odd angles, leading to worse shimmy than that which they were supposed to stop. The wheels were fixed some time in the mid 70s.
The wide range of landing speed options required a wing that stalled gracefully, rather than suddenly losing lift. The Harrier 1 wing had a fascinating range of devices on it, including the oddly-labelled vortex generators added in 2 steps. Harrier 2 had a much different wing, which may have shared the odd quirk with the F18 wing due to a stray algorithm in the MD computers.