Thr RCC thread is really meant for posts that wouldn't neccessarily warrent their own thread or , like the name suggests, random chit chat. Making it into a subforum would force members to create threads when they wish not to as the social lounge itself is more geared towards those types of threads. Additionally, there would be an influx of threads posted in there that would probably need to be moved as the RCC thread often contains posts specific to hardware/software/etc. Most members find the RCC thread a more convenient way of getting help from the 'regulars' of the thread.
Sorry for any spelling/grammar errors - posted from my phone