I kind of want to see a Chinese HRE system actually, with a bunch of tiny OPMs everywhere of varying levels of Sinicization, with the Magyars being a more recent threat like the Ottoman Empire OTL. Flags would be easy to make if we just follow the Paradox standard of using just the character and a background color.
Also, I would like to vote for a divided Japan. The more tiny countries, the more everybody's suggestions gets implemented. And I'm a sucker for alternate character readings.
I agree with you on that China should be divided into a number of small countries (which will be made easier by AoW pretty much doubling China's province count), but I think we've pretty much committed so far to Greece being the HRE.
More tiny countries is great, and I fully support it. However, we must be careful to avoid the mod becoming just a number of evenly sized OPMs or two- or three-province minor blobs, and we should still have.
That being said, I think there should still be at least a few relatively large countries. I think it would be best if we placed them in regions that are incredibly disunited in vanilla - Germany and mainland Southeast Asia were the two regions that came to my mind as possibilities. Maybe we could also have a large and strong, coastal-ish West African state as something that could possibly interact with Western Europe and North Africa; also West Africans conducting expeditions to the New World would be based.
There is a minor (pun intended) problem with this, raised over on the paradox forums by Akronblad (creator of 399AD and Aurora Universalis) and qweyt (of the Extended Timeline mod).
Apparently too many tags make the game crash.
Constantly.
huehue
Interesting, will keep in mind. Speaking of Extended Timeline, I know that mod has some assets (such as Hellenic religious icons) we could
steal borrow.
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Anyway, summarizing from what Terran, NC, and i discussed on chat earlier today:
-The vague equivalent of Orthodoxy will be an Indian-based eastern church, perhaps based on the historical
Syrian Christianity of St. Thomas (which, confusingly, had absolutely nothing to do with Syria) with followers in southern India, Indonesia, and mainland Southeast Asia, and possibly elsewhere. It's also possible that this religion combines elements of Christianity with Hinduism, which would be interesting.
-Buddhism not only survives in India, but spread westwards across the Indian Ocean, such that some countries there (Oman and East Africa were brought up) have Buddhist governments/majorities.
-All major, large enough religions should have reformation chains.
-Some preliminary ideas were discussed regarding tech groups. Most of the former Argean Empire is Western, Persia and Central Asia are Ottoman, the western European Muslims are still Muslim, pagan Europe is either Indian or Chinese (or a mix of both), China and India are going to be a tech group or two more advanced than vanilla (maybe India is Muslim, China is Indian) the nomads are still Nomad, and Vinland is probably Chinese. Obviously most of these are getting renamed but that's a base. And something needs to be Eastern; now that I think of it maybe countries close to Greece but still somewhat removed (like the Balkans, Scythia, North Africa, northern Italy, etc.) should be in that group. But these can all be changed.
-I had the idea of the Incas accidentally discovering gunpowder (ala
Guns of the Tawantinsuyu or Sunset Invasion) and thus being more powerful and advanced than vanilla. Some people didn't like the idea, so this probably won't make it in.
Also regarding the reformations, I just had another idea. What if we made all those dependent on conditions that don't happen each game, so a different set occurred each game, thus making each game different and more unpredictable?
of the day 
