I like the idea of Active Topics and Newest Topics tabs.  Unfortunately, in practice these two tabs are really "Newest GD Topics" and "Active GD Topics", since GD has such the lion's share of traffic almost all of the threads that are displayed under these tabs are from GD.

It would be great to be able to somehow select things like "Newest AR-15" topics or "Most Active Outdoors" topics.

I know on the module app, there is a drop down menu where you can choose between the different sections, like AR-15, General, EE, and do on.
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I never noticed that tab!    Perfect.  I'm glad to see Arfcom could look into the future and address my request.