Level Sync needs to be more forgiving.

[Lemuria]

But...you don't lose agro unsynching. I've done it on purpose several times to get an uncapped second wind in, then recap and continue. And fighting alongside other people while I was tanking the mob, mob stays on me.

The problem comes with the mobs reaching the edge of the Fate zone. At this point they instantly retract and aggro is lost. Further to the 20s timer for players, it should apply to mobs in Fates as well.

At any rate, having to resync is still a mighty big pain in the backside since it kills all buffs and stances. It would be a massive benefit to have some leeway in any case.