I've no problem whatsoever with the addition of a (potent) effect on an XI roll, but please don't replace the effect of a roll with a new effect if the COR should roll a XI. Unpredictability is one of the job's core aspects, but it's also probably its greatest weakness.

If I could ask for one thing to be done with COR, it would be rolls that scale higher with better totals. Oh, and Blitzer's Roll should be magic-type Haste, not delay reduction. =P