Honestly, while not an active exploit, powerleveling on the scale that Ilum allowed was a bit much, Being oped all the way through playing out stories just make them boring and lacking in both challenge and xp. The double xp on it's own is plenty to maintain said challenge while leveling through class story and still get xp and a few extra levels while doing it. While it may not have been an exploit in the technical terms, it was still taking the quick and easy way out to get quantity over quality of play. In short, good for BW for taking the initiative on this, I can live with a short break and a quick shower anyway before double xp sucks my brain into the comp for the next 48 hours.