Yeah still interested, just didn't realise lead wasn't included! I'm currently informing my current trade partners that i'll probably be moving into a more secure trade circle (if this one doesn't work out, i'll look for another anyway ). I think you're right to go with population increase, as we'll all get more cash
EDIT: By the way, i punched in the remaining trades that are needed for the circle, and there appears to be a few possible trade partners there. Would you like me to PM them?
EDIT: I've messaged several nations that could be interested, it's a shame that none of my friends from RL don't have the resources we need