One of the struggles bitcoin needs to overcome to achieve mass acceptance is ease of use and understanding. Bitcoin Talk plays an invaluable role in this process as noobs and not-so-noobs venture here to understand, to teach, to help each other and more broadly bitcoin.
I guess this forum is good as it is... Bitcoin need to be more popular - somehow generally accepted / know type of payments... Just as easy to use as Paypal for general public when most oh them are not interested in technical etc. things = not interested in this kind of forums. There needs to be place like that to discuss just backend etc deeper things beyond simple use. So, there might be no need to change Bitcoin Talk too much. Just my two cents.