leeroyj, what BestWarrior is saying, is that this is a strategy where you will not want these sectors back. You just take them from other guilds, then put 8 defending armies in it, and leave these sectors again, so that the other guild would have to re-conquer it....just to hurt the other guild. So, your siege costs don't increase because your siege costs depend on the number of sectors you own or currently have a siege on. If you give away each sector after you conquerred it, your next siege will cost as much as your previous siege. As for the NPC, from what I've understood, they only hurt you if they are not in the landing zone. If they are in the landing zone (like the whole Southern part of the Iron Age map, not just the sectors next to the river), they will be neutral (white) NPC's. So, you could apply this strategy in the whole Southern part of the Iron Age map. And even if you were not in the landing zone and the sector would turn into an aggressive NPC, it would still attack only 1 life per day, right? So, if you are taking and leaving a sector every day or 2 or 3 days, that wouldn't really be a problem. Also, that aggressive NPC would attack the sectors of the other guilds around it, the guilds you were trying to hurt with that strategy anyway...
BestWarrior, I think I understand your point, but I'm still not sure if it's not just better to keep the sectors. Yes, it would cost you more in sieges but at least you'll get the guild level points from it every day. That strategy will also cost you lots of units and goods to unlock defending armies. Maybe it would even be better to use a dummy guild to lay siege at low cost and then hand over the sector to the "mother" guild. I'm also against these dummy guilds but from a ticket I've sent to support, I understand that Inno doesn't see this phenomenon of dummy guilds as a problem...So, we might as well get used to it and take advantage of it ourselves.