As a newbie, it is important that ypu identify yourself with your local board, because it will enable you to learn in your local language which might help you understand topics being discussed in the forum faster, and it will also make you grow faster, especially those people that English Language is their second language. Local board will make you also have good contact and have new friends from your country because, life doesn't end here in bitcointalk, since nobody knows tomorrow.
Your idea is good, but I'll tell you why it's never worked for me. When I came to the forum I never wrote anything on my local board, even though it was already there. I value my privacy and I don't want people to know where I'm from and where I live. Usually local languages have this friendly drive where people want to know where you're from, what you do for living, finally want to organize meetups, conferences and such. I don't want to tell them no and I don't want to take part in this. I prefer to stay anonymous.