Disembowel is part of DRG's raid dps kit, therefore giving piercing debuff to BRD/MCH would devalue DRG's total raid contribution by 5-10%. They would have to balance this by buffing DRG's personal dps by 5-10% to make up for it. That would also mean that BRD/MCH would get a free +5% damage buff when there is no DRG present. This is a flat out buff and exactly what people mean when they say BRD/MCH would become overpowered, BRD already provides massive amounts of raid dps even with their low personal numbers and another +5% buff would be absolutely broken. They would have to lower BRD/MCH personal dps by 5% to avoid buffing them from current numbers to account for the 100% piercing regardless of comp. This is the same net result as just getting rid of piercing debuff altogether and just increasing DRG's personal dps to make up for it.

BRD/MCH are currently not overpowered with DRG in the party, because that's taken into account in DRG's lower personal numbers. You wouldn't have your dps numbers as BRD/MCH without the DRG in the party, DRG is the corner stone of this whole affair. It is DRG who becomes underpowered in their raid contribution without ranged classes in the party. To put it into perspective, taking piercing contribution (~300-600 dps depending on single or double ranged comp) away from DRG is almost the same as taking Trick Attack (~600-900 dps again depending on comp and utilization) away from NIN.

Ask yourself, who in their right mind would take a NIN, that doesn't Trick Attack, into their party? Because that is the situation DRG is in if you just give piercing to BRD/MCH without adjusting all the related dps values. SE was absolutely correct in their response to the question and the people asking the question fail to see the big picture in terms of raid contributions.

Quote Originally Posted by echo78 View Post
Just delete disembowel already and buff DRG's personal DPS to make up for it lol
This would be the best and easiest approach. They should do this to every weapon type debuff.