'I think the UK and US public both prefer more moderate leaders than the party activists'
Absolutely, but Trump doesn't appeal to party activists, they like Cruz like all the ones at CPAC and the Republican elites. Trump is appealing to ordinary Republican voters who pack out his rallies.
If you compare it with one of our party rallies, for the Conservatives you would find nearly only bussed in party activists abd careerists on the make out of university etc, and hardly any ordinary non-paying members. At a Trump rally, there are no bussed in activists, just ordinary voters.
'Trump doesn't have anything concrete like that to offer'
Trump has something much better than thatcher, because she did not have the common touch. Trump calls himsel a "blue collar billioanire", ordinary people think he is one of them, just like Farage. Trump offers non-politically correct talk, jobs brought back, end of free trae deals, America First and Make America Great Again. He offers hope, antiestablishmentarianism and putting ordinary people and America First. His Finally Balls shirts spell out his return to common sense which will put things right for the ordinary people again - "Trump 2016 - Finally Someone with Balls" unlike all of the controlled puppets.
'The UK Tory Party tried rightwing "real" conservatives as leaders in the naughties for at least '
No, none of them had the common touch, they are all Oxbridge, they were all politically correct and just shafted people for big business. They offered nothing for ordinary people because they had nothing in common with ordinary people. They don't share the hardworking common sense ethos of real conservative ordinary people. Farage is the one who offers that.
'Then they selected Cameron from the Tory centre-left (right of centre wrt the country) who did some fluffy Huskie-Hugging and won the next GE.'
Only because their time had come because the people couldn't take any more Labour and Gordon Bennett and because Murdoch abandoned Bennett.
'Labour kept losing until they selected Blair (Labour furthest right = centre in the country) who won 3 GEs.'
Only because Murdoch backed them and because their time had come after 18 years of Tory rule which ended up in sleaze. I voted for Blair too in that landslide.
'Corbyn's prospects still look grim'
Corbyn is finished because he has been shown to be weak and without common sense. The people would have backed him if he had been brave and had offered stunning change, but he is just incremental more of the same and totally devoid of common sense. It is over for him and the Blairites will eventually take over again, but no one likes them either so they will have to wait years until their time comes if it ever comes because a PR voting system would finish them forever.
'The GOP has moved very far to the right compared even to Nixon'
I think it has moved populist and against conservative ideology of Wall Street, globalism, international aid, humanitarian wars, UN agreements, climate change etc etc i.e. it has returned to what conservatives were years and years ago before the billonaire left wing Rockefellers created the Rockefeller Republicans like Mitt Romney's father and the Bushes who obey the globalist philosophy of free trade and Wall Street. Trump is appealing to the ordinary people and to America First which is why all the "world leaders" are terrified because their entire game will be up - climate change and all the rest of it.
The people are cheering Trump on in their tens of thousands. it remains to be seen whether Trump will trick us and sell out to the globalists, but I don't think he will. He is on a mission to save America and will only need a 4 year term. Today again he said to the Trump fans "wouldn't it be nice to get along with Russia?" No one else would ever say that. He has gone against all of the globalists and money power.