I'm thinking that there are many of those structures that depend on the will of the POTUS to exist, but many others depend on Congress. So once again, it will be a titanic task, and the purge needs to begin within the remains of the Republican Party first. To give Trump a bit more credit in his historic task, I have said many times that his work at destroying the Republican leg of the Uniparty beast remains underappreciated to this day. He hasn't finished that job, though, and that's a prerequisite to tackle the bigger one.
Discussion
Because a non-trivial outcome of Trump's assassination would have been the immediate takeover of the presidential candidacy by a member of the remaining Neocon cult. I hope no one even doubts that. If they are unable to get rid of Biden due to his current bout of dementia-driven stubbornness (plus his natural-born arrogance), the second best option is to have their own candidate on the other side too, as they had always had until Trump broke the rules.