I don't think the official GOP has changed much. They have always been Globalists, pro-Establishment, and pro-NeoCon warmongers.
The Senate GOP is an excellent example. They are mostly Bush/Cheney style Establishment NeoCons. That is why they keep obstructing Pres Trump, the SAVE America Act, and the America First agenda.
The Base has outgrown that bull-shit.
It is time we get serious about primarying every single Globalist, Estabilshment type - or move on and create a real America First Patriot Party.