Earlier quoted context omitted.
or something non liquid - plastic balls, foam pit etc.
After flying on parachutes it's pretty hard to land on a pre-determined place, and the smaller the place the higher chance of missing it. Falcon-9 first stages have more control authority, and even they sometime miss the landing zone if the wind is particularly unfavorable; but they are unmanned and the stakes are lower, in worst case they just won't land softly. Can't have that with manned capsules, so has to have p…
Interesting point. I fly kitesurf kites, so I know a fair bit about piloting a bit of cloth above my head. I'd guess a parachute / kite would be a fun way to land the capsule.