Will Singapore loose it's importance as a Shipping hub due to China's One Belt One Road strategy?: http://splash247.com/chinas-new-silk-road-risk-singapore/
Just look at the map of the Western Pacific and you can see why China wants to secure supply routes that is not dependent on passage through Malacca or Sunda Straits, Luzon Strait or the Ryukyu Islands, all of which is easily blocked by an unfriendly power. Control of the South China Sea does not help in this respect.
That is why China is spending billions on building ports in Myanmar, Sri Lanka and Pakistan. With the latest development in US/China relations, look for this effort to be speeded up. Attempts to attract countries like the Philippines away from the American spear of influence will also be reinforced.
As trade with USA drops and confrontation become more likely, the importance of access to trade routes that cannot easily be disrupted becomes more important for China. They are therefore also building up high speed rail network through Kazakhstan and Russia to Europe: http://www.forbes.com/sites/wadeshepard/2016/06/28/what-the-newly-branded-china-europe-silk-road-trains-really-mean/#10d3c0061d85
MOL Express can already offer 15-18 day transit time from Japan to Europe via this network: http://www.simic.net.cn/news_show.php?lan=en&id=190531