What the Moyes appointment shows is that it's mostly down to the person and the decisions he makes within his sphere of influence. The planning by other office holders doesn't mean so much.
Moyes has gone in raw, habituated to a high degree of control of his environment at Everton, ripped up Ferguson's established successful structure and installed a fancy replacement that despite its affordances, has failed at the first hurdle.
It's a textbook error in change management from a guy who obviously didn't learn from previous moves that above all, you have to focus on the critical human resources involved.
The club has made it worse by undergoing the transition from Gill to Woodward at around the same time, which seems to be the main factor in last summer going to waste.