I agree with you. I think this is a much stronger naval setup to use the Kid Class Destroyers in an air defence roll and their Kang Ding Class Frigattes in an anti-ship mission profile. The Kang Dings are just horrible at anti-aircraft so these Kidds are an excellent addition to the Taiwanese navy. And at 15% of the origional cost of the Kidd class, the Taiwanese are getting a great deal on them.
Honestly, though, I think the Taiwanese would be best suited by trying to get some better fighter planes. If they could try and get a deal on some F-35s or even F-22s I think that would drastically improve their defence. Because, let's not kid ourselves, whoever wins air superiority is going to win a naval battle in the Taiwan Straight.