All I can say is this is a really messy issue, therefore I'm going to relate to this but make a separate point. I think there's a point needed to be made here where Taiwanese and Non-Taiwanese interested in the issue forget the whys and hows. First why? Why does Taiwan need conscription? Well even if Taiwan wasn't ruled by the KMT, there still would be conscription because the main and probably only enemy Taiwan has is China and compare the full/part time military of 6 million to 100 million. Taiwanese citizens are also not known to be fanatics of nationlistic pride, therefore without conscription there wouldn't even be a talk today, right here on this board or anywhere about pro-independance. You might as well give up with a fight and recognize yourself as part of the PRC. Which leads to another issue I might state:
Imigration out of Taiwan, certainly if Taiwan indeed went through a process of initiation into officially becoming part of the PRC, or uniting, many, mainly rich and middle-class would immigrate out of the country to predominantly U.S. and Canada. Taiwanese-Americans and Chinese-Americans do have a difference, the main being almost all if not all Taiwanese-Americans have went back and visited "home".
The second issue is "how", look face it, your fortunate enough to be born in a democratic society as if you were in China and lashing out at the country for drafting you, after you've dodged to another, they'd execute you for that. The how here is how to set up a non-draft system in which male and female would seek the military as a profession out of own will and only approve a draft in the situation of war. The answer if not likely, but only possible if Taiwan has full international recognition and support of being a independant COUNTRY.