Kind of suspect this change will simply be the adjustment to ensure that the same weekly mark can't come up twice in a row...

Quote Originally Posted by Nekodar View Post
Anything becomes easy when you zerg it...
GW2 Crown Pavilion.

They pretty much blew up the scaling to shaft zergs. If 6-10 people hit each boss simultaneously (and didn't derp), they could all to be brought down in ~10 minutes total.
When a zerg of 30+ people ran from boss to boss, the event could end up taking a bloody hour or more, causing everyone to get bronze rewards.

Granted, that's not even close to an ideal solution either, because you have to rely on everyone in the open world to behave in a particular way and you ultimately have no control over what everyone else does...