Is ZOS going to modify guilds more creatively?
The ideas can be many, of course everyone will have to choose which guild to participate in weekly (although many goals can remain open between multiple guilds):
1) Dedicated space within the guild bank for players, where they can freely take items;
2) Weekly guilds quests, regarding dungeons and trials, with final loots for the players;
3) Weekly invasions in Cyrodiil and kills in random classes, with pvp activity score for guilds;
4) Lottery best houses among the guilds;
This in my opinion would revolutionize the concept of community of the game, while the multi guild aspect would concern only some aspects of the game.