Ick!
I'm all for getting sleep Thursday-Friday night, so I'm not sure I can participate. Depends on the time, I guess, and the required arrangements.
But if I participate, I can do any role - that was quite proven a few years ago when
Brinn visited Finland and we did a little
clip of the scene at the gates of Moria and somehow I ended up doing Boromir and Bill the Pony.
And besides this is just reading so it has even less importance.
So I think our prime requirement is just that we have as many roles as readers, which might be tricky because the number of readers seems to be unsure.