He doesn't need to burn it to the ground. All he has to do is refuse to participate.
The Republicans should run their own primary debates in a neutral way. No moderators, simply a timer in clear view on the podium. When the time is up, the microphone shuts off.
When a candidate finishes their answer, they press a button. If they have time remaining, it is "banked" for the next answer, if they want to use it.
While a candidate is speaking, all other microphones are off. If a candidate still tries to interrupt, he forfeits his next turn to speak.
Questions are submitted by the respective campaigns. Questions must be worded so that every candidate can answer: no more "gotcha" questions. Questions will be actual questions, not a position statement disguised as a question.
Questions will be recorded by a voice actor, then chosen at random when the moderator presses a button to play the question.
When there are more than 2 candidates on the stage, each candidate will be given an opportunity to answer it, with no rebuttals. Once there are only two candidates, once a candidate answers the question, the other candidate will get a half-time rebuttal. (i.e. if answer time is 2 minutes, the rebuttal is limited to 1 minute).
This gets rid of biased moderators altogether, and there's no opportunity to steer the debate in favor of a particular candidate.
If the Republicans run their debates like this, they can then say: we will participate in this kind of debate. The other parties are welcome to participate. We won't be doing any others.
The first debate should include all parties on enough ballots to win the electoral college. After that, it can be reduced to the major party candidates, if the others aren't gathering enough support to be viable.
Your plan is great, but no questions needed. Just topics, general topics, like economy, foreign policy, etc.