An easy rules-based solution for #Taiwan would be a treaty between #US and #China
US nominates any existing model it would like to see for taiwan. Consider these 3 models
1. Cuba model
2. Hawaii model
3. Puerto Rico model
China agrees to implement any of the chosen models for taiwan in a stepwise manner with the US.
If the US wants to change the model before starting, it can eg. if it wants to grant independence first
More than fair, US can chose all parameters and get unlimited head start