Erm, why is pigs and uranium red?
I think this was a neat idea to do, but I don't think basing it on experience instead of trade sets, and saying you suggest everyone who has a red resource reroll, goes together real well. >_>
But then again, I don't like the idea of rerolling in general. When I first joined CN, I was told that my resources were utter crap, and that I should reroll. I didn't, and now today they're part of one of the "best" trade sets.