It doesn't take significant time/resources to add a sub-forum, it is completely trivial. If you want to back filter everything (move all of the threads) then it isn't completely trivial but even that would not take very long if you were a programmer as you would just write a script and move posts based on keywords. A competent data base programmer could literally do that in 5-10 minutes.The Mastiff wrote: If it's something that would cost Spyderco significant resources I'd be dubious if it was me making the decision.
The upside of a heavily segmented forum is that information gets really focused and people who are only interested in certain topics can just look there. There are people who don't actually use knives but are interested in the collecting market. They would likely appreciate a new forum where Spyderco just puts up sprint runs, new knives, and discontinued knives. This would be where you would post old knives and ask for information.
However just look where that goes if you keep doing it. The person who is generally interested in Spyderco has almost the exact opposite reaction. Note you can combine them by having a sub-divided forum however have a way for members to look at all new thread started. This way the person who wants to look at everything can and the person who wants to look at just a particular forum can. This isn't difficult either, a competent programmer can do that in the same 5-10 minutes.
I set up a simple link for example that you can see all new posts. A lot of people just use that and they see all new activity and you can adjust it for the number of new posts. Some people never use that as they are only interested in certain parts and not in others so they only ever look at particular sub-forums.