Um while most BLM's aren't that angry about it (IMO, It's a change in rotation, though people will judge if it's worth it or not to them.), Bard's received significant nerfs dps wise, regaling them to a support slot that has had it's support function lowered as well. To a class surrounding dots, losing a dot (1/4) is a big deal. So it's not that much of an overreaction. In your tanking land, you paladins were held supreme. Now it's pali/warrior is viable and better. In DPS land, melee dps got buffed damage wise, ranged got debuffed. This results in more relative upheaval. Coupled with the lack of forewarning, and sheer lack of necessity, People are angry.