I think compiling a list of shanties or poems which can be sung a capella in lobbies would be good fun, imagine Brick Hardcastle opening up his mic and saying the first line of a shanty and everyone knows it, joining in for the chorus ^^
The songs here should be based on individual clans (song of war)
Significant figures (scary tales of the best gunners in history!.. or just "Skrim is Love, Skrim is Life.. The Musical"
The devs
Maps
Anyway, just some ideas! I will probably write up a draft for some poem shortly ^^