I don’t know if Trump would dismiss the idea out of hand. The day to day operation of the presidency immerses Trump back in the swamp where surviving and trying to keep the country on the tracks takes 95% of his time. I don’t think anything motivates Trump more than payback. As VP or China tsar he would have one duty, payback.
DJT doesn’t play second fiddle to anyone. He’s a “my way or the highway” kind of guy when it comes to this kind of thing. Not so in negotiations, but that’s a completely different animal.