I don't understand the point you're trying to make. Do you want 40-mans to be removed from the game completely? Or do you want Carbine to implement systems that mitigate these problems? I think Guild Circles take care of the guild issues somewhat. Instead of players guild-hopping, guilds can circle-hop and team up with other guilds who are at the same stage. Also, guild drama and poaching will happen no matter what the content format is. I've witnessed it myself in GW1 many times, and that game didn't have 40-mans.