Is there any chance of getting a list of character who most over/under-performed their Oracle predictions - both relatively and in terms of points? (maybe when the 1st round ends) Would that take a lot of work?

It's not that hard... I'll post that at the end of round 1 if you remind me.

In fact maybe there could be a feature on the site that compares characters' performances to Oracle consensus? That would be fun.

This would be a little harder, although it would be cool to have. I wouldn't expect it soon though... Morgoth is pretty busy.
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R.I.P. Robert Jordan, 1948-2007