@Ynek: Well, that's a major complement.
As for your question, my expertise is only really in the area of firearms. While I would be capable of looking at other areas, I don't think I could do drugs and poisons the justice a biologist could, or CCWs the attention a sword-fighting enthusiast could.
When I set out, I only really intended to do firearms. If when I get to the end of that, people are interested in seeing my take on other things, I may continue. But, as I say, there are probably people more qualified to work on these other things.
@Inquisitor Cade: Suggestion taken on board and implemented.