The whole D-day scenario is completely obsolete regarding an analysis of the current situation existing between the straits.
Crude military power used like in WW 2 would be simply dysfunctional and totally counterproductive and China is well advised to desist from such a selfdefeating strategy. The campaign eventually achieving the reintegration of Taiwan into some kind of ´Greater China´will rely heavily on economic, social, cultural and (probably pivotal) on psychological factors which will enable China to neutralize Taiwan´s ´anti-China forces´. Indeed the strength of the PLAAF and PLAN will be of secondary importance compared with China´s ability to absorb and redirect Taiwan´s economic and social potential.
Today the PLA primary objective regarding Taiwan is achieving the credible capability of destroying taiwanese military forces and effectively deterring US intervention if splittist forces on Taiwan should cross the ´red line´. The resulting strategic credibilty will be an instrument of utmost importance in the upcoming process of negotiations on ´normalization´with taiwanese leaders. (Beijing understands very well Teddy Roosevelt´s dictum: ´Talk softly but carry a big stick!´)
Violet,
The point of the thread is the PLAN's actual amphibious capability against its most likely operation, amphibious operation of Taiwan. Please leave the economic, social, cultural and psychological factors out of it for it does not add any value to this thread.
To respond to your post. No the PLAN does not have the capability to destroy ROC's military forces, short of nuking the island. Please don't respond by posting large numbers of IRBM that China has pointed at Taiwan. Ballistic missiles are just an expensive and inaccurate way of delivering a high explosive payload. Serbia still had manage to keep the majority of its armed forces intact after a 72 day bombing campaign by NATO.