I agree. And they would need extensive modernization to match China's Type 052 "Aegis" ships. Better to just give them ready-made Arleigh Burkes complete with the SM-2/3 and Spy-1F. Taiwan is on the priority list to get the Patriot PAC-3 (the latest and greatest in the series, performed flawlessly in Gulf War 2 save for that Chinese land-attack cruise missile Saddam shot off at Kuwait City) but Taiwan's leadership is having problems procuring it (and other hardwar as part of Bush's 2001 deal) thanks to the KMT.
When in US service they were known as AEGIS-light, and sport the ability to fire surface-to-air missiles in support of Aegis cruisers, which, if necessary, can assume control of the KIDD's missiles (very critical in any confrontation in the Straits of Formosa). The were considered in the mid-to late 1990's, next to the AEGIS cruisers, to be the most formidable warship of her size ever to patrol the world's oceans, blending the best features of the SPRUANCE Class destroyers with the combat system of the VIRGINIA Class nuclear cruisers to produce a ship with unique characteristics:
Just my opinion.
I think the missile that Saddam fired at Kuwait was nothing more than a modified Silkworm-which was older than most American soldiers fighting the war.
about the rail gun concept,
http://www.donaldsensing.com/2004/07/rail-guns-for-navy.html