Thats perfectly fine if you want to cover more than just Southeast Asia, i kindof expected that from the start....what i had in mind was more like this:
Except going a little farther South (include Java but nothing further south of that island), and a little farther west (include an eastern part of Bangladesh).....
This way we could work it out so that Assam + Manipur are there from the start, each one controlling 1 territory, 'Bangladesh' territory will be rebel, with the Mughals and possibly the Russians as emergent.....an alternative to this is literally leave the western border the same as in the image above, and not include the Mughals at all, but leave Assam and/or Manipur and group them into an existing Culture group.
Cultures might look something like this:
-Japanese
-Chinese (includes Korea + Vietnam)
-Siamese (includes Laos + Cambodia)
-Burmese-Indian (includes all Burmese + Indian factions, plus Tibet)
-Malay (includes all of the 'island' factions)
-European (Portuguese, VOC, Spanish and French is they are to be included)
The reason why i dont think its a very good idea to include India is because there are alot more factions that were present that we would have to try to cover, which would take away from the historical accuracy of other factions....
You kindof have to decide between a less accurate mod that covers a larger area, or a more accurate mod that covers a smaller area.....with a good degree of flexibility mainland SE asia alone takes up 7 faction slots (Nguyen Lords, Trinh Lords, Khmer, Lan Xang Federation, Siam, Toungoo Burma and Kingdom of Arakan)....i dont see how you could realistically exclude any of those factions....Island SE Asia takes up about 8 more (VOC, Portugal, Aceh, Johor, Banten, Brunei, Banjar and Spain)...again very difficult to realistically exclude any of those factions.....thats 15 factions.....just to try to get my point across, but again like i says you really have to decide upon that for yourself.