Guild Wars 2

what if there was a dungeon or a few dungeons that you could make a squad for and invite your guild or just activate it using guild influence and it would scale depending on how many people were in it? or just ad instances on existing dungeons that are under guild dungeon that you can still do with 1 player but it can go up to around 20-25. it would scale with however many players there were and could still be done by smaller guilds. this could fill some of the endgame gap that people are missing without adding a new grind.

Guild challenges.

All the guild missions are kind of like dungeons. Especially guild puzzle.