Alright, I'm trying to wrap my head around these changes so please correct me if I'm misunderstanding.
1. Post I-7, the change will give a debuffer a worse defense versus casual gamer mobs (0s and +1s).
2. Pre I-7, the change will give a debuffer worse defense versus all mobs. The extent of this change will roughly reduce the effectiveness of all to-hit debuffs to 80% of the current value (assuming 3 SOs).
3. Doing the math for my /dark MM, it appears that the 80% reduction is roughly equivalent to an unslotted maneuvers at the even level mobs in either case (while maneuvers is not a powerful defense tool, it is a whole power).
While the net result for the change plus I-7 will make little difference for the mobs Im fighting, it will have a negative effect on the casual gamer who has trouble with 0s and +1s (and trust me they are out there). Additionally, it seems odd that the patch would not simply be held off until I-7 is ready for live since by the patch notes it doesnt appear that anything is broken to the point of breaking the game (of course that is just my opinion).