Most aircraft in horse transport are near the end of their working lives, horse pee is highly corrosive to alloys, despite attempts to insulate the horse box from the airframe there's always some that gets through and seeps between frames and skin which is difficult to wash away.
These days of instant video replay of high quality it is time for judges to be made redundant, everything can be made in measurements and artistic content is just an opinion especially in gymnastics and ice dancing, not even sure the floor exercises in some areas are any more cavorting about the floor.
Cycling and sailing are interesting as both use very high tech materials and design, the cycles now weigh so little that it's mainly the human power and stamina that causes the win, I do wonder how many different bikes there are, are the ones used in the longer distance events stronger than the sprint bikes and are they all scrapped at the end of the games as they are only built to last that long, bit like Colin Chapman's Lotus, the ideal car breaks just after the chequered flag.
Sailing is going the same way, I think in the the days are numbered for any displacement boats, the future of yachting is the foil, it's spectacular and fast, the days have long gone in professional of instant panic at walking pace, now the participants need the same safety protection as most high speed motorised sports, hitting the water at plus 30 knots hurts and can break bones