I love HP as much as the rest of you guys, but I'd hold off on breaking out the metaphorical champagne just yet. Just because it's being mandated doesn't mean government officials outside Taipei city will know how to use it. I predict that within 5 years, you'll see a lot of incorrectly used HP: misspellings (re for ri, chi for qi), outright typos, incorrect spacing (the equivalent of Zhongxiaofuxing or Zhongxiao Fuxing), misusage of apostrophes, intercapitalization, etc.
Indeed, I predict cranky laowai's blog will be filled with more posts than before with complaints about how some schmoe in rural Yunlin or Taidong county misused an apostrophe.
Hsieh and Tsai Ying-wen both take a more pragmatic approach to these issues with the exception of CKS Memorial Hall.
I believe you mean Xie and Cai Yingwen?