Small hardware changes. I've been watching some usage statistics, and there's features operators in the field aren't using, mostly because they're too inconvenient.
"Napoleon attacked by rabbits" so I had to go google search it. "The story of Napoleon being "defeated" by rabbits during a hunt in 1807 is a humorous anecdote, but it's not a confirmed historical fact, though it is mentioned in General Thiébault's memoirs. "