Hopefully they'll make a twist and Ilbert is actually NOT a traitor and that it was somebody else. If not, perhaps he's working with the Ul'dan monetarists since they will have alot more to lose now that the Crystal Braves are up and running.

But I agree he has been TOO helpful and has had too much screentime compared to any newly introduced characters. It'll be a shame if another right hand advisor will turn traitor.