Do nothing serious when it comes to emotes. /dance should be something very funny /joke should be the stupidest things to hear a space marine say. like FOR THE!!! wait. Wut.
Chaos Space Marine jokes: - FOR THE EMP- I mean *clears throat* FOR THE DARK GODS!! - Aid! Bear! Quench! - MILK FOR THE KHORNFLAKES!! - What's that stench? Oh... sorry... - It's a kinda magic... - Any last words before I... impale you with my magnificent weapon? Ork jokes: - Iz not eezy been green. - My dakka bringz all da boyz to da Waaaaagh!! - So you like watchin' loadsa boyz playin' wiv dere choppas do ya? That's all I can think of for now
Orks citing poetry would be as they say "Da best". It works well in Borderlands when psychos do it. View: http://www.youtube.com/watch?v=mf4GWJTzchY
I know Imperial Guard is a ways off, but I think their music should mostly be based on 19th-20th century military marches. Such as: View: http://youtu.be/YLDyBXOoMR4 View: http://youtu.be/8ccQ6cT-9kk It'd probably have to be instrumental renditions obviously, though I suppose it would be kind of funny to hear Guardsmen singing something like "Imperium forever! Hurrah, boys, hurrah! Down with the traitor, and up Aquila!" Though if something more bombastic/sci-fi is preferred, these hit the general feeling pretty well: http://youtu.be/L0bcRCCg01I http://youtu.be/UwteHQoYfLQ Though I think aircraft will need a button they can press to start playing Ride of the Valkyries.
I dare you guys to listen to this song, change a few simple words in the lyrics and picture a squad of space marines, one with a banjo while the rest nods and snap their fingers on the rhytm. lmao!