I've been four manning ramparts and slave pens with some guildies. All of us well within level range of the instance.

We had some recent runs under our belts from before the patch, and instances are significantly easier after the patch.

In ramparts we had to pull in a 70 pally for the last boss pre patch, post patch we killed him in an incredibly short time (and plenty of mana left).

In slave pens we were struggling pre patch. Post patch we just cruised through it.