Fantastic idea! I've been wanting to join the one on the current scene for ages but kept missing the cut off point. Im sure a bit of discussion between us all on here can help decide which bouts would be worth including.
I will warn you now that running a prediction league is quite time consuming. Therefore, I would suggest that one of the posters who is either retired, permanantly on the sick or expecting to be unemployed for sometime (i.e. lame and lazy) takes charge of the project. You should have plenty of candidates.