aside from ASW & AEW support for other vessels, is there actually any other use for this ship!
for evacuating people you dont need a 40k ton vessel, the 071 has already shown that it is quite capable of doing so, the only case in which you need the 075 would be in a very hostile enviroment, in which case you would need to use attack helicopters to provide a cover for transport helicopters that are trying to evacuate people.
as for Taiwan, it is only 200km away or less from the mainland, meaning if the use of the 075 is to provide helicopters then in this case the 075 would be absolutely useless because helicopters from the main land could easly reach Taiwan and the helis could probably go back & forth 4 times or more within 24 hours transporting soldiers.
modern war is all about range & minimizing risks & always taking the safest route, no matter how much you trust your weapons if there is a safer way to wage war then take it, that is to strike your enemy from a range they can't harm you, using the 075 to ferry troops in the straight would be by far the riskiest route to take, do you really want to put a thousand soldier in a single ship & station it near hostile shores of a relatively advanced country? no matter how many Taiwanese anti ship missiles you take out (with preemptive airstrikes & anti-missile defences) there is always a chance some of them would survive & if the type 075 is 10km or less away from Taiwan then it would take just few seconds for anti-ship missiles to reach the 075 giving the 075 very tiny reaction time & increasing the chances of it being sunk, the loss of a 075 would not only result in the death of more than a thousand soldier but also significantly demoralize China.
in case of a war to liberate Taiwan, the safest way to do it would be the following:
first accuire 2000 land based cruise & ballistic missiles specificaly for Taiwan, second detect & chase all Taiwanese submarines, once that is done give an ultimatum on the tv to Taiwan, once negotiations start tell the Taiwanese negotiaters in the face "we have 2000 missiles ready to be fired at any second now, if you dont accept the one country two systems then invasion will happen and all military & political leadership in Taiwan will be excuted & Taiwan will get zero autonomy", in case if they refuse then commence the bombing & see if they accept a deal after one weak, if they don't then kill their political leadership & continue the bombing for few more weaks, this should result in the death of few dozens of thousands of Taiwanese soldiers and for sure they will surrender & if they dont? will just send in soldiers using helicopters