There's a nonzero chance that a future Republican President will do a NAFTA-to-USMCA style "abolition" of the FBI, where the name plate on the building gets changed and James Comey gets fired again but everything else stays functionally the same.
Nah, I think for that to be done a reshuffle of the US intelligence apparatus needs to be carried out, a department of domestic intelligence, tasked with protection against plots of domestic terrorism and a department of foreign intelligence, tasked with gathering and disseminating intelligence to our strategic allies, and also protecting the lives of American citizens abroad through preventative intelligence gathering, IE by extracting them if they are deemed in danger, not by starting a coup because the local government wants to initiate a forced sale of their property in that country.
Create those departments, background check every active agent and worker currently in the intelligence apparatus, and remove everyone who hails from the ideological lineage of the Kissinger days.