I have to admit that I dont like this idea... Although I spend much time on bb at the moment, I wouldnt like to manage 2 teams, I simply feel like I couldnt pay as much attention to my second team as I pay to my first. That is my personal opinion, but I believe this isnt: I would just hate to play with some guy from USA, Australia or China, etc.(nations randomly picked:D) We dont speak same language, we dont even play bb at same hours because of different time zone, I cant celebrate when Serbia wins some match either in bb or in RL with them, I cant mourn with them when Serbia lose...
Another thing is something that Yellow Cake from Japan mentioned, possibility of stealing draft picks by second teams, and then intentionally not training them, just because you want to harm some country.
To conclude, I dont like this idea, but it can be improved... There was a lot of talking about some country called Utopia(or even WNBA, I like this too:D) on previous topic about this suggestion, where every second team would play. I suppose this is a lot harder to implement in game, but I like it much more, because all of the problems mentioned in this post will be fixed... Utopia will have it own leagues, cup, winners can even play in BBB, everything like a normal country...
I hope you managed to understand what I was trying to say, my english is pretty bad, but I did my best here:D