i instaled taiwan for a check..
say, the pak file Closter created is pretty good, see the pic at first post.
i dunno what new pak file we need.. for campaign purpose, i bet most ground war is on taiwan - so the pak setting in Closter's is ok. for PAK in China, that's ok too - check this pic..in RL out theater covers mainly Nanjing military region and part of Guangzhou MR.
the meaning of pak in china is not that important, for no ground fighting. BUT - if you define new pak according to what airbase/stationed with what ac type, it could be of some significance. why? the airbases in costal area PAK is mostly short-leg fighters, light attackers. those long leg fighter, attack and bombers are inland pak.
in closter's pak setting, the uppermost pak could be set to Nangchang( not a RL option), the coastal pak set to Fuzhou, the lowerest set to Anbu or other large city at SW corner.. as for the west side pak.. err anything will do.
BTW, i agree ma-tsue and kinmen island could have its own pak, for making blue ATO sending some flights over there. same goes for japanese island.