Other way around. Most duties would benefit because most duties aren't even synced. Open up your duty finder and look at all the trials, raids, and alliance raids that are not synced. Very few of them are, and every single one of them should be. Even in casual content, these are supposed to be the significant fights in the game. The fights that canonically push the WoL to his/her limits. Mechanics tend to get more difficult to handle as the fight goes on, but right now new players don't get to experience this at all due to the battles ending before the boss can start pushing players more. A11N is such a great example of this, as I've seen Cruise Chaser just obliterate groups when he's <3% and starts throwing everything including the kitchen sink at you. Now, his fight typically ends before he even gets to use Propeller Wind. When I talk about ilv syncing fights, these are the ones that I have most in mind. Dungeons are fodder, and most are already synced anyway, be it through leveling limitations, or capped duties.
