Yes. The DPP, in the party platform you link to, proposes changing the name of the country (in article 1) from "Republic of China" to "Republic of Taiwan" (presumably 台灣共和國, but I'm no scholar of Chinese).
Following the principle of popular sovereignty, we
hereby propose that the decision for establishing
the Republic of Taiwan as a sovereign state and
formulating a new constitution should be made by
the residents of Taiwan via referendum.
They don't propose a text for Article 1, but it would be surprising if it included "The three principles". I note that they also propose reform of the college entrance system and scrapping the exam on the "Three principles".
They propose that these changes be made by referendum.