"If any one of those engines has a significant failure, it could be a bad day for SpaceX"
Not really. Each Merlin 1D is surrounded by armor plates, blast blankets and a pop-off panel to...
Think in terms of ripples developing in the thin liner due to thermal effects. They know this because some unexploded COPV's were found with the buckling. The SpaceX public statement said COPV...
That is why logistics missions are to be first; then small crews to get things prepared for more people later.
Dragon 2 can land
at sea under chutes alone,
at sea under chutes and thrusters,
not sure about at sea under thrusters alone,
on land under chutes alone,
Sounds like a job for an orbital or suborbital cruise platform.