Just a small idea maybe to have control more over each section having its own scam folder or closed and no longer in operation for the trades sections hardware and investment games gambling sites. This way would be a lot more laid out than people just marking scam and it being cluttered up. This way topic can be closed and moved and put into scam section of that section of the forums where if mods are active can move posts into it or have a set mod to keep members aware and move stuff into it. That way it frees up the legit and paying sections and keeps the scams or problem sites in its own section.
Having a sub-section for closed threads on every category would probably make sense, but that would be a lot of work for moderators. I'm not sure if it would be worth it. If users followed the guidelines and edited the title with [Closed] and locked the threads it wouldn't be required at all.
Regarding moving scams to that new sub-section I don't think it will ever happen because scams are not moderated. Mods can't (must not) lock or delete a thread if they think it's a scam and they certainly wouldn't be able to move the threads to that new section.