Imagine that. Patching something with demonstrable proof quickly. It isn't like kills in the crucible take time to provide meaningful data or anything. They'd know something was wrong after the first kill. Thorn didn't take 8 months to fix either. It has been adjusted no less than 4 times in the past 8 months. Weaken it, strengthen it, lessen the range, and lower the DoT. There's probably more than that even.