Fortunately I have read the full record of Jay Wilson Taiwan Press Conference.
There is one Q&A :
The above Q&A is translated from Chinese. The only source link is an Taiwan website. I can't find any English language source.Q: Will the Taiwanese play together with the Korean? Or in the same channel(something like that)?
Jay: Mainly, YES. We have 3 realms: EU/NA/ASIA. What I'm certain in NA realm is that players from NA will play together, while players from Canada will play together. I'm not so sure about Asia realm but I will update it in the future. We match up players according to their distance and languages, instead of their nationalities.
Take a look at the sentences in bold. Does it mean it won't be so random for players joining the public game? Will players be matched up according to any principles such as distance or languages like Jay said even though they are in the same realm?
This is a key infromation unrevealed, or if I missed anything before.
I have posted this on the NA official forum but get none reply.