Re the dynamic of the leadership - surely that's exactly what the problem is. The US constitution means that every few years you are required to elect a 'leader' - king/president for a while. As the Greek philosophers warned, the people who put themselves forward, seeking this power, are precisely the sort of people who should never be given power.
Trump seems to exemplify what they warned against!
But the problem pre-dates Trump. The Washington system has been eroded for decades by the power of corporate lobbying, and in more recent times the party system has been corrupted by the super-PACs and the Citizens United verdict.
The result is that a political system with all sorts of checks and balances is now easily bought by those with deep pockets - in short, it's not fit for purpose.
Basically, I think that we should never rely on so-called 'leaders' - only sheep need leaders. An intelligent well-informed, critically thinking electorate should be able to act in their own interests, and not delegate their and their children's political futures to such as the Don, with his unsavoury KKK and Mob connections, his racketeering and unscrupulous style of doing business, his cynical corruption, plus his racism and sexism etc.
That so many of the US electorate seem to accept at face value whatever this practised snake-oil salesman spouts at them suggest they are not yet mature enough to use their votes as citizens.
But then those who back the Clinton campaign are equally likely to be being misled, just as likely to be disappointed in the outcome.
No matter who gets in, the vast majority will continue to struggle to make a living, to pay their rent or mortgages, to cope with raising their kids, caring for their sick or disabled and old folk. The struggle with poverty continues, regardless of who runs the Washington machine.