At the NBA, almost each team is from a different state in USA, and the identity is not an issue there either.
That is because they are still playing US teams and not like if you put Korea, Japan and Taiwan together that are three different nations.
And does not teams that play in the Euroleague play in their own nation as well?
And still, NY is a all different state than Alaska or California.
The same as Korea and Japan are different states in Asia.
The teams playing in the Euroleague are also playing in their own league, but still when they are playing at the Euroleague, they do not lose any "identity".
I'll repeat, just for you - Having more teams in a conference/BB-nation will make the game harder - more teams, the harder it is. But, it will make the game much more interesting.
Those who are here for an eBay-game, and doing nothing, will leave.
But all those who are here for a challenging BB-game will enjoy this game much more and join-in.
We can also add All-But-One bot teams for them..., this will do the trick for those...