Hi Guys. It really comes down to what our needs are.
Multiple sub-fora are helpful (even necessary) on boards with large, diverse active posting memberships. Without them, you get so many discussions going in a single forum that the topics rotate off the first page faster than they can be read, and too many different topics to allow for easy, enjoyable reading.
This forum doesn't have the traffic necessary to justify multiple subfora. That day may come, but until then splitting up the discussions would have an undesired effect: I like being able to easily read threads about all different types of Ethnographic Arms and Armour.
After all, this forum's general topic is already specialized and represents a sub-group in the larger grouping of Arms and Armour.