I disagree that Phantom (Force Camouflage reduces all damage by 100%) is not worthwhile to take. I certainly question the gain of Subjugation instead of Phantom, particularly in an endgame setting. If the question is utility, there can certainly be debate (ie, if a group is relying on you for interrupts, Subjugation is a strong choice). However, in terms of pure DPS, being able to become immune to burst AoE damage, especially when it is predictable, is a very viable choice. For those who played WoW, it reminds me of the usefulness of the Paladin's bubble, and the Shadow Priest's dispersion for negating boss mechanics and continuing to DPS and heal. For example, if a boss has a mechanic where after 10 seconds, he erupts, doing 200,000 AoE damage to all within his Line of Sight, the normal raid response would be to break the Line of Sight. A Marauder with Phantom has the choice of staying and DPSing the boss for the entire 10 seconds, and hitting Force Camouflage right at the end, becoming immune to the 1-shot kill (much like Dispersion could be used on Sindragosa, and Bubble Immunity could be used on Kael'thas, Prince Malchezzar, Mimiron, and other bosses with instagibs). My 2 cents, obviously, but I strongly feel that Phantom contains a great deal of PvE utility, enough to (imo) outcompete Subjugation. Don't forget that Marauders still bring Obfuscate to fights, it just can be used slightly less without the talent.