I'd like to see:
Siam - Late game formable for Thai countries, should require not only province ownership but high ADM tech. Could change government to Absolute Monarchy.
Burma - Same thing for the Burmese
Srivijaya - For Malay countries that dominate Indonesia and/or Indochina. Must have the Srivijaya dynasty in power (only Malacca still has this in 1444). Prevents forming Malaya.
Shan - Might as well use the vanilla Shan state as a formable country.
Australia - There are currently no formables for colonial nations in this region.
Siam - Late game formable for Thai countries, should require not only province ownership but high ADM tech. Could change government to Absolute Monarchy.
Burma - Same thing for the Burmese
Srivijaya - For Malay countries that dominate Indonesia and/or Indochina. Must have the Srivijaya dynasty in power (only Malacca still has this in 1444). Prevents forming Malaya.
Shan - Might as well use the vanilla Shan state as a formable country.
Australia - There are currently no formables for colonial nations in this region.