Instead of having Pacific and China region, how about East Asia (China, Korea, Japan) and the rest of Asia as separate regions?
Not it's actually true how to be separated
But the problem
The reason why in most sea almost never seen in CS
Although it makes sense when thinking about the region geographically, those 3 nations (south-korea/china/japan) probably have the majority of the structure and investment in asian esports.
For example 3/5 riot studios in asia are in those nations, not to mention the amount of infrastructure riot has in korea with the LCK etc.
SEA is a also pretty undeveloped sub-region in terms on PC esports.
These nations aren't very prevalent in LoL or many other PC shooters.
Riot wanted franchised teams/regions to fit these three criteria:
Not many apac orgs could fill all three criteria.
Whereas you look at South Korea who have a strong history of be competitive, being popular and be somewhat financially viable. (especially when thinking about LoL)