Today's world is no longer like when Brtis and Francs battled it out in North America, where two groups face off on a large plain, slowly and chivalrously walk towards their enemies with muskets. Today's confrontations all happen in 3D, where missiles, jets, submarines, and tanks makeup a total war. ROCN's four Kidd class ships stand no chance. I understand Jeff's idea of a modernized version. But doesn't matter how modernized it is, it still cannot even stand a wave of 20 ASM cruising towards it at Mach 3.
On top that, ROC Armed Forces don't even know what to do in the case of a real full out mobilization of the mainland counterpart. To this day, it is still called the National Army, a remnant of the old China. It's training, doctrines, and political teachings all trace back to "Big China" days. They are patriotic, might be Taiwan, might be Greater China as a whole. The societal view towards unification always fluctuate with time and political incidents. Armed means is not the only approach to eventual unification. It is much more sociopolitical than most of us would expect.