It wasn't hard, but it was a decent challenge early on. Overall it was a very nice raid, but awkward with 25man taking over the 40 man format. The lore behind it was also nice, though most certainly people primarily went there for the loot. Don't kid yourself.
OT: A mostly linear raid with some choices in bosses where we scale up a tower, I'd probably say yes to that. Not sure if they could pull it off and make it fresh.
This one time at Brand Camp, I got Singed.
I enjoyed kara's fleshed-out castle feel - many side passages, many optional bosses. I would like to see something like it again.