My theory on Taiwan is China will use DImE to annex Taiwan. As in, nonmilitary means. And will do so gradually.
If Taiwan has 20 elections (I'm guessing) in the next 80 years, a candidate who is pro-Chinese Communist Party (overtly or not), or a candidate just susceptible to PRC coercion, only has to win one in order to set conditions for either a rapid or more gradual takeover. Pro-independent-Taiwan candidates have to go 20 for 20, however, to keep pro-Chinese Communist Party members out of power.