future history
well, since this thread moved a little from china in 2300 towards the general geopolitical situation in gdw future history, i'd like to offer my five cents.
generally i must say, that (and you surely can prove me wrong by citing the book) i never got the impression that the chinese were too backwater in 2300. second rate power, okay (but the world stands only so many superpowers), but strong and with a huge potential (and i find it more interestin to play for a power with potential than for one at its peak). also, i find the breakup of china not unreasonable.
but i would like to offer a different look at what gdw did to create their world, even if i cant totally diagree with what you wrote.
one could say, what gdw did was ingenious (i am provoking

)
if you come up with a new world, you could go different paths: you could extrapolate this new world more or less linear from our world, but then you end up more or less with "todays world plus spaceships" (and i am afraid a little that this is what 2320 is gonna do, when fixing the "america is no superpower anymore" issue)
you could write a totally original future world from "scratch" (well, not scratch, since you whant to link it to the past), but that would require a bunch of really, really creative people and a LOT of sourcebooks.
or you could lend your setting from the past, an epoche everyone has an impression of and were only a few words will spark a whole bunch of associations, the readers mix of imagination and pseudo-historical knowledge filling the gaps.
i think gdw did the latter, and did so not too bad. the world in 2300 so closely resembles the world of the 1870s. alien enough to be more than today with fancy lasers while close enough so everyone could relate to it.
the events of the 1870 eventually led to ww1, so we are again living in a highly unstable (thus exiting) time in 2300 again ;-)
actually, this background was the reason why i liked 2300 so much (i played only one campaign back then, but that went on for years and was set in the secret service milieu from before reunification to the end of the kafer war - so LOTS of politics were played)
as long as you cant write something completely original (and that would be really hard), i think this option isnt the worst.
when i read the 2320 (which in most parts i like), i was afraid colin (no offense meant) will be going for the first option with the us beeing the superpower and the world pretty much as it is today. especially when i read the "germany is militaristic and genocidal" part, i went "oh, no, not THAT story again" (i dont mean to be rude. just those were my first thoughts)
and one more thought about the tantalum: as far as i understand it, tantalum isnt traded at all. france, britain and germany (or bavaria, it just hurts my guts thinking of it ;-) i dont feel different 'bout them than mbrinkhues *grin*) get it only from esa (as azania is a member, which explains why it is top notch in africa)
well, generally, i do agree 2300 was eurocentric (but so was the world in 1870), but if you want to create a politically explosive world it is gonna by centric somewhere. and dont think a us-superpower would be less eurocentric. i think, folks outside europe and america dont really distinguish so much (when my girl (she is chinese) is really mad at me, she says: "you ameuropeans are SO <insert_undesireable_attribute_here>!")