In one of the worlds I've completed 486 provinces - now I only complete them because of events because frankly it is very expensive in goods and the most desired benefit was the availability of expansions which are apparently now only available for significant $$$$$$$$$$. More than enough runes, relics, kp (well there is never enough of that) etc are gained through the tournaments. I expect additional benefits from the AW's do not increase with provinces cleared above the ceiling of 457 either. So again - it is about removing the dang ceiling for expansions and/or providing an alternative for events.
I have the same production of seeds and at least in Winyandor I don't have an issue with seed production. I guess I will now check the next time I clear a province to see if it goes up. Seeds are an issue in the other worlds I am playing in - but that's only one of many many issues. I don't think it will be possible to do amuni in any of the other worlds.I have the same 486 provinces completed + a couple scouted. My seed production in the trader is definitely increased still. 486 x 29 = 14,094 production which is what I get. Just pointing that out in case you need seeds.
I have the same production of seeds and at least in Winyandor I don't have an issue with seed production. I guess I will now check the next time I clear a province to see if it goes up. Seeds are an issue in the other worlds I am playing in - but that's only one of many many issues. I don't think it will be possible to do amuni in any of the other worlds.