I do not care much about bosses coming back, well, whatever the reasoning there will be one made by Blizzard, so it's ok for me.
However, I do not like the color palette of Firelands. Sure it's Fire-Lands, but that doesn't mean everything needs to be in the brown through red color spectrum. We got one green tree there. They could've made the zone look a lot more alive. Look at Twilight Highlands it has shit loads of color, yet you still see scars with purple/shadow fire/magic spilling out of them, which makes the zone look scared and dangerous. Similar stuff could be done for Firelands and it would not look so bland.
I guess not many will agree, but it looks bland to me, bosses are fine, the whole picture of the zone is bland tho - it really feels like I'm in Molten Core again and I didn't like Molten Core from the get go as it had no detail no nothing, just a tunnel of lava with mobs inside.
---------- Post added 2011-04-28 at 12:45 PM ----------
- Onyxia's Lair (Original)
- Blackwing Lair (Patch 1.6.0)
Those were the first 3 raids of WoW and they were all Fiery