Re: floating back to terra firma using three parachutes
The craft can be steered with rockets, parachutes place you at the mercy of the wind
First of all, strong winds almost invariably make launches impossible. Then, manoeuvrability is still going to be largely limited to the area determined by the initial trajectory which is set to land the bits in known large empty spaces. Pinpoint landings don't matter that much as the support crew is at most minutes away.
Musk's landing by rocket is not about the position as much about wanting to reuse as much of the rocket and engines as possible. It makes great TV, not so sure about the science and economics given the extra weight and complexity.