Some politicians in Taichung and Xinbei are upset that construction of MRTs in those cities is managed by Taipei's Department of Rapid Transit Systems. Taichung's government has so little involvement with rapid transit construction that Jason Hu didn't even know the completion date had been pushed back two years (to 2017), or that its cost rose over 10 billion NT dollars. Yu Tian, a national legislator from Xinbei (I think DPP), also complained that Taipei's MRT is too "Taipei-centric". "It only takes 20 minutes to take a taxi from Banqiao to Sanchong, but to do the same trip by MRT you have to change lines twice", to paraphrase his complaint. They feel rapid transit construction should be handed over to the central government, possibly the TRA.
There's a good case to be made for central control, given that Taipei's MRT already crosses county borders and Taichung's and Kaohsiung's may do the same in the future. The fact that Hu didn't know even basic information about Taichung's MRT also suggests reform is needed, though I don't see how central control would necessarily increase local involvement. Yu's complaints however ring hollow: of course Taipei is the center of the MRT network, because that's the economic center of the region. Even if it wasn't, it lies at the center of the Taipei Basin, surrounded on all sides by Xinbei, so the shortest paths between many parts of Xinbei (e.g., Xindian and
Luzhou, Xizhi and anywhere else) lie through central Taipei. It is hard to believe that there's as much demand for a rapid transit line between each of Xinbei's districts- and by the way, Taipei is constructing one anyway. That's not to say that they shouldn't build, just that it makes sense that it has been a lower priority than lines connecting Xinbei to central Taipei and Xinyi.
To be fair it is true that Taipei gets an unfair portion of Taiwan's resources. A better way to resolve this problem though would be to integrate Taipei and Xinbei, instead of perpetuating a political division that obscures the two cities' interdependence.