Hello everyone! I play in Spain but I'm the Andorra's NT Coach, so I'll write wanting you to know that,
I'm way against this measure. Really I am.
Merge micro-nations won't be the solution for the unstopable number of users lefting the game. In fact, this measure will force a lot more teams to abandond their teams while they play in other leagues, with people who don't understand them (there's a lot of people who can't read nor write in English...). Take a look at Utopian Forums... It's a disaster, at least in the leagues I could had play, so I can't imagine why this method will help on this point. Yeah, I'm really sure it won't happen.
Another "problem" (for me, obviously) will be the NT and U21 teams. Who'll vote for that manager who don't speak his/her language and comes from another country?
I'm so sorry, but do not attempt to solve the abandonment of users by merging the micro-nations. This is a problem that rarely can be fixed now, and that's not the users fault. Try to take better decisions next time or at least stay tuned on what user wants and try to communicate, for example, making an app to the game.