Well here, what you're telling me is that this deck
Is appropriately representative of all the potential units that could be added in? We can even forego what you consider as OOTF units in this case and it still isn't a good representation.
Something like this
would be slightly closer in capability IMO, but even this is a gross misrepresentation.
(E.G. ROK prototype M48A5K WRSA would be better here, along with other unit choices that would be more appropriate but are locked behind prototype status and all the other simply 'not in-game' units)
Both decks lack the potential APC-mounted MLRS systems, Kungfeng MLRS systems (Incl. potential incendiary rockets, and the AP Cluster Kungfeng VII), the KM900'ish CM-31, and also doesn't appropriately potray the APC options, MBT quirks and so on so on.
You still don't get it? The deck you posted is still mostly US hardware (second tier, i might add), albeit under different flags. Even if we get all the OOTF units to have a favorable representation of taiwan, you still get a severely downgraded USA, that is bland, lacks character and anything special. In gameplay you are very likely to get shit on by the majority of decks out there, imagine you have paid like 6 euro for this, if this is not pay to lose, i don't know what is.
I would also refrain to sell taiwan as a naval powerhouse, aside from the fact that naval is poorly received and has major problems concerning gamemechanics, other nations like japan could legitimately bring more stuff to the table, and japan is an asian power.
Like i said thematically taiwan shoul not be a problem, since there are plenty of scenarios of chinese civil war to continue. This also shouldn't be a problem in China, since you can freely purchase wargame in mainland. The control body for electronic entertainment doesn't give a shit when you keep a low profil and rename nation pack into faction pack. Technically nothing prevents taiwan to be there from the beginning.
From gameplay perspective it is most sensible to regard it as the ticket to power for BD, since they literally only needs 1 high AP infantry and some costeffective AT plane, which taiwan can provide. The taiwan deck can just consist of those 2 units padded out with stoneslinging neanderthals everywhere else and the coalition would still be great.
Also for the last time, official cutoff date is 1991. Everything later depends on many factors, including but not limited to the mood of eugen; what the candidate can offer in terms of kits/game machanics; how far OOTF the interesting/necessary units are and what coalition partners offer. The best you can hope is for eugen to make wargame 4 and as incentive i would recommend you write to governor Tsai and tell that cabbage there exist a semi realistic game where you can beat those 426 to death with our glorious elite troops. She would prolly consider it as a top priority and bribe the shit out of eugen. Problem solved and everyone of us would be happy.