[Skirmisher]

I can certainly see your perspective on this. But I think, why tear up a completed offical OOB just to create a country with a handfull of units? Yes Green is offical but it's also a general OOB. And as Don and Andy have stated many times, OOB work is never done.
The only benifet I can see is your way you'd get the offical flag for that nation. I'm not big on picklists as I usually purchase for the AI.

When I play the AI I take an inferior army and let the AI have a superior one. Also giving the AI much more to spend of course.