Just my thoughts: 1) I would say no, because that opens up a potential loophole/exploit for loading a world2) If the first guild is a guarantee (100%) then the 2nd guild would be completely irrelevant because it would never come into play, at least not for the person doing the selecting. Unless you mean this as a mechanism for getting OTHER people in the 2nd guild into the world where the first guild's alliance is set? I would have the same objection to that as to the first argument, i.e. potential exploiting to stack a world. I understand the issues around stacking, and agree that this sort of thing could be used for it, hence some clarification:What i am suggesting is similar to the current PvE maps, where it prioritizes guilds, but if you cannot fit (in this case if it would skew matchmaking), then you don't get in.This is further reduced by 2) where only 1 guild is 'preferred'. Or even being able to select a LIMITED number of friends who would be 'prefered', if a guild has too much potential to be used for stacking.This could further be secured by having it so that both players must select eachother for the prefered status to be active...Remember an alliance could be ~20-50% (based on 500 being 20-25% and 500-1000 limit in alliance) of a world size, plenty of room for more guilds/alliances/players. IMO, GW2 has always been about allowing friends to play together, Mega-servers, Region-based SPvP, the only (slight) outlier has been WvW, which could be fixed by switching server (my small guild have collectively gathered gold to get guildies onto our server). With this change (as it is currently described), people in multiple guilds who currently play WvW together on the server will get screwed. Those in multiple WvW guilds would likely make alliances and stay together, but it is highly doubtful that they will accept PvX/casual guilds due to the guild cap, and wanting spaces for those more WvW focused.