You're only talking about going from Matsu and Kinmen [in Taiwan] to Fuzhou and Xiamen [in mainland China]. It is symbolic. If you want play the real game you're going to have to get into direct links, involving Taipei, Kaohsiung, Shanghai, Guangzhou. I think you're focusing too much on the showpiece, rather than the reality.
小三通本身就有侷限，它不過是金門──廈門，福州──馬祖間的對開，如果兩岸想玩「真正的遊戲」，就要談三通，這才是打破僵局的關鍵。