I don't believe that Trump will be able to rebuild an empire that has been shaken to its foundations to such an extent. For every empire you also need a population that is determined, tough and practised in a disciplined lifestyle. To exaggerate, the US population is addicted to drugs. How you build an empire with so few capable, tough and, above all, battle-hardened citizens, I don't know. Most modern people have nothing in common with folks who know fight first hand, deprivation and the creativity, how to get by in tough times and how to make intelligent decisions, without becoming evil thugs.

The US has never had to fight a major military war at home in the recent hundred years, they lack that real time experience and the learnings from it. It's something that needs to be practised, in the view of military experts. Only soldiers experienced in real combat can bring their government up to speed on the latest developments in warfare in order to derive future decisions from them.

Even if many people think that modern wars are won through technology alone, this is not correct. You need men who can operate and master this technology, and also, all equipment, in the end, is physical and depends on manpower. The success of the USA in setting up military bases all over the world, overthrowing governments through bribery and constantly creating new trouble spots is undisputed. However, more and more nations no longer see this as an advantage, but as a danger.

It remains to be seen how much money is still needed from the previously pro-NATO Arab countries, or whether they are not already so rich that bribery is no longer enough and they are now looking for other partners and projects, like BRICS. I think it will be a while before the dollar loses its supremacy. But China and other nations will have their say and are already doing so.

Trump is too old to become that super imperialist. He maybe will live for some ten years longer before he also will fall towards senility and other illnesses. No one can stop age.
Maybe he is going to be killed earlier, who knows for sure. To make him a messiah, yeah, that works for the part of the populace who places high hopes onto him. But the moment he will reign für half a year, a year and the situation for the populace will not significantly change to the better, this messiah status will quickly fade, is my guess.
To fund terroristic groups and fanatics does not always play out, it is intended to do, I think.

I need to add that I don't know all these things for sure, but it shall be obvious, that I don't. I repeat infos I gather from the sources available.