Is the regional league getting bigger then if a Japanese Club promotes but no Japanese Club demotes from league I?
Why would that occur? For a start - it's in all likelihood impossible to do that within current BB structures.
There are a few ways you could structure this...
Let's say - for ease - only one super league in Asia - a conglomerate of: Sth Korea, Thailand, Japan, Vietnam (again reiterating: this is for example's sake).
You could...
- have direct relegation/promotion based on nation (lowest finisher relegates, regardless).
- make it simply on ranking, disregarding nation entirely, but drawing on those 4 to provide the highest world rankings in that region - they play in the Div 1.
- Have a relegation game during the playoffs, where lowest Div 1 team per nation plays against a team that would promote - winner goes/stays in Div 1.
Lots of ways that national identity could occur, without going the Utopian route.
http://with-malice.com/ - The half-crazed ramblings of a Lakers fanatic in Japan