CW, I have no problem for a Java centric based mod. But the mod shouldn't use "Portuguese Invasion" as the title. Perhaps some Javanese title?

If we wanna focus on PI, then we should use old concept.

I like how you put a list of tribes as factions. I am not sure if it is best to put them in 1 culture (to avoid CTD), or put them under respective culture (as what we made previously, kota merdeka under malay, bhumi mardika under javanese). But orang asli and rimba tribes can be combined, and toraja tribe expand to be free factions of Sulawesi and Maluku.

Anyway, for me, old concept also good, just add faction(s) that representing free factions for each area.

Wanna use RTW or BI?