The following post contains images of the new LotRO raid, so if you don't want be spoiled, don't look :).
I've now seen all the bosses of the new Dol Guldur raid, and I must say it's a very fresh and welcome change to the previous, more claustrophobic DN raid. DN is "pink tunnel after pink tunnel", with bosses that are just clones of each other, but the new raid has a more traditional "evil tower" look that appeals more to fantasy geeks like me. Most of the monster and environment art is recycled from older instances, but the overall look is much more impressive and massive. Although there are just three boss fights, as opposed to the six in good old Rift and DN, the fights are very challenging and interesting. Actually, the trash there is also very tough, and I think we've wiped as much on bad pulls as on the last boss now :D.
The tower features a lot of running, and you can actually mount up in a specific spot in the second boss room... but it's just a bug apparently, since the mounts move at a seriously slowed speed.
At the top - they really should add a rail there between the stairs, it's so easy to fall down.
I feel something approaching...
It's rather funny looking at the mighty melee warriors running after the big beast!
It's less funny when it's coming at you!