Parachutes?
Tangentially from the above discussion about soft landings, the aeronautics are fixed, so the challenge is handling the massive stresses caused by gravity - twice - which are greater on landing than on take-off - is that correct? Which more than doubles the wear (to put it mildly) on the equipment. Why fight gravity twice, and use so much energy, when parachutes have been used for decades to drop the personnel module "gently" on to Earth's surface. Or even several parachutes for separate parts. No doubt the engineers will explain that a parachute is too unpredictable as are weather patterns etc but why not have both options ready?
What Musk and his team are doing is brilliant and essential, and I would not want to have 2 different modes of propulsion for, say, a quick trip to the shops - hey how about a large elastic band on the back of my car to tug me back home in an eco-friendly fashion - but I think there has to be an ingenious way to avoid the huge expenditure of power than we have grown accustomed to with rocketry.
Hydrogen balloon stored in the nose? Or hot air - one thing a rocket has is plenty of heat. After all, what is the hurry to bring the thing down again?
Any smokers ready with the fag packet ready to make notes on the back of?