I think this PI thing is going to turn out to be more interesting than I thought. Think about it. The entire T2 industry depends on starbase towers. Starbase towers are now dependent on PI... Ask yourself "what happens if the major T2 moon goo producers go to war on each others towers"? How fast can those towers be replaced? POS fuel? ex-NPC Materials for T2 manufacture? How large are the stockpiles? How soon will existing stocks get depleted?
I suspect that things are going to get interesting VERY, VERY quickly. For newbies I would suggest that getting into POS fuel production is a safe bet. There are a LOT of towers, they will all need fuel. Admittedly most tower owners will try and make sure they have a sufficiency of supply for themselves. But we'll see what happens.
So? What part of the PI stuff are YOU going to be getting into? Are you even going to try?