I do sometimes see advice for winning on Suicidal offered up on the forums by players with no track record of Suicidal wins that I find doubtful, misleading, or less than complete...So, I think it is important to reality check what people are really doing. It's really easy to say people are winning because they are doing X, but its been my experience that the reality is closer to they are doing A,B,C and D, not doing M,N,O, or P, letting them now do X,Y, or Z. Which, makes easy solutions not easy! I do not envy you this task.
I would highly encourage looking at what the players are actually doing to win on Suicidal, by checking with the players
who have the appropriate track records. There is a fairly decent sized list of players whom have demonstrated this capacity over time. I suspect most, if not all, would be willing to share with the Stardock what they are doing if asked (although some might want PMs or e-mails). A few have offered up consistently good advice on the forums over time that tend to give it out in digestible chunks. Getting this information doesn't necessarily offer up a solution (and I doubt there is a complete solution), but at least there would be a clear understanding of the methods and means. This might point out some design changes to toughen up the system.
In the Suicidal game AAR, I included saved game files for this very reason. Some of things I'm doing I don't even notice anymore. Many of the things I'm doing have to be taken in context, and are not necessarily easy to explain or implement without something solid to grasp on to. Of course, I may be helping to increase the pool of Suicidal players, making your jobs even harder!