Ah I didn't think of it that way, I had the idea of floating speech bubbles everywhere, been playing too much Orange Box. :P
A secret item would be a very cool idea, you could perhaps reveal where this particular item is after you complete the level or entire game. Phone booths would probably be the most logical choice for the Matrix style. I say try it! No harm in that, if it doesn't work you could always do like you say and collaborate with another team member, record a conversation to .mp3 about the mods creation and upload it as a bonus feature, something like that.
I know i'm interested!
