I really like the Negotiation Helper. It makes GE much faster. But most of my cities are Iron Age (camping). And it would be useful to have an option to “Save previous goods” as Bronze Age goods are always more difficult to produce and trade for. I think this is probably true for all ages, as special buildings and GBs produce current age goods; so they are not a problem. (It would be great if FoE would add a One Down Kit)