Of course this kind of conduct would frowned upon. But unfortunately when Gordias Savage dropped in 3.05, it encouraged this kind of behavior. A1S Faust broke up a lot statics during the first few weeks. Players were forced drop jobs like Paladins because of their low DPS output and physical defensive CDs were useless because many raid bosses primarily dished out Magical Damage. Statics began theorycrafting the most optimal raid composition in order to get the highest possible Raid DPS numbers to the beat the extremely tight DPS checks. I know the devs said that Midas Savage would easier, but the damage had already been done. A lot of raiders have gone into Midas Savage with the same mindset of Gordias Savage of sticking only to certain jobs.