But the change ingredient would be that there are now ROC missiles that can reach and destroy much of Southern China if they have the warheads to go on them. I do not believe the PRC would take down the ROC in such a fashion at such horrendous cost to themselves...which in effect would mark the end of the PRC as well.
If the ROC has nukes to put on these new missiles, the playing field is much more level and the threat of war will subside IMHO. Whatever else the leaders of China may be, I do not believe they are madmen fanatics that will bring death toall they have tried to build.
It wouldn't level the playing field, just put ROC and US at a major disadvantage.
The communist party is not monolithic by any means. There is no Chinese leader can survive the prospect of an independent Taiwan. As far as the Chinese concern, it is a continuation of their civil war that never ended in the first place. If ROC actually get nukes, it would be nightmare for Japan and US. In the short run, it hurts the PRC, but it is also a slap in the face to US's non-proliferation treaty. Remember, DPRK did not get their nuke technology from China, they got it from the rogue scientist from Pakistan. If US did not do anything and watch it happen, in a few years, everybody will get nukes with the Chinese help. It will certainly degrade any military advantage US has over other nations. Imagine US send its aircraft carriers to attack Iran and getting hit back by a couple of nuclear bombs(torpedo+missiles). Or Americans wake up one day and heard LA, or New York getting hit by a nuclear suicide bombers. US would not let it happen, they will have to saunction ROC, both military and economic.
It is just like the North Korea nuclear crisis. Before the bomb test, it was the US's problem, China even wanted US talk to the DPRK directly. But after the bomb get tested, it become a Chinese problem...