The community was nearly evenly split on the topic during the recent roundtable, with half loving the idea of one-guild-per-character, and the other half desiring a more... flexible arrangement. However, the studio saw a lot of discussion concerning creative ideas for connecting players with social groups.
SOE is leaning toward allowing for multiple guild memberships because it anticipates that EverQuest Next's one-class-can-do-it-all flexibility will encourage players to reach out to several social circles. The following video posits situations like how a character may want to be in a social guild during the week but join a mass project guild for weekend work. Give it a watch and let us know what you think!