Any foreigners successfully structure a prenup in Taiwan?

[Celeborn]

I think these links may be relevant

First, by default, there is separation of properties acquired before marriage, unless one of the other two other property regimes are specified

Divorce settlement question

Yes. Subsection 2 (Articles 1017 ~ 1030) of section 4 of chapter 2 of Civil Code Article 1010 Either the husband or the wife is in any of the following circumstances, the court may, at the instance of the other party, order the application of the separation of property regime: … have not lived together for more than six months, provisions in the preceding paragraph will be applicable to both of them. Article 1030-1 … The court shall adjust or waive the share of distribution provided that…

This blog post describes how assets are distributed during inheritance when one spouse dies, but does introduce the 3 property systems and that Statutory is the default system

There are three kinds of marital property systems under Taiwan law:
(1) statutory property system,
(2) separate property systems, and
(3) joint property systems.

If a married couple in Taiwan did not register under either a separate property system or a joint property system, then by default the statutory property system applies to their estate. Most of married couples in Taiwan are subject to the statutory property system.

Taiwan Legal Channel :: Marital Property