As a newbie, it is important that you 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.
Local boards are very important and everyone both newbies and higher ranked account should identify with their local baord. It's the higher ranked accounts that will make the local board conducive for the newbies that's why I said they're needed on the boards/threads too, you gain nothing when you disassociating yourself from your local board instead you're leaving it in the hands of those that might be competent to pilot the affair of the board but when you join hands with them, you guys will be able to groom the next generation of productive users of the forum. I knew the importance of local board and that's why I was a strong advocate for the Nigerian local baord which we have gotten. Newbies are more free and inspired when they're surrounding by those from their locality and they learn better that way before exploring the main boards.
Although, there are some countries that Theymos hasn't grant their request to give them their own local board, that shouldn't discourage you from posting there, because it is the number of people in a local board and how active that sub board is that will help to speed up the provision of your own local board.
The recent local boards that was granted by theymos all gave him a reason for doing that so if others what the same thing they need to also prove to theymos that when their board will be approved it won't become dormant like some local boards are. The activities on the board needs to increase and older members on the board should come together and put hands together to see how they can create awareness about the threads to their countrymen on the forum. For Nigeria it was easy to identify one from the way they write so if you have similar attributes for your country men you can send them DM to invite them to the thread or create other campaigns like Signature Campaign for the purpose of creating awareness for the thread. You can organize local competition to keep them interested in discussing on the thread and before you know, your local thread will have active contributors without any extender motivations but first people need to be motivated to contributions to discussion on the thread.