Yes. I found it to be greatly enjoyable, and it had some really bad-ass new areas and equipment. But that's just my two cents.
This thread already exists. http://www.gamesas.com/topic/1402743-is-dawnguard-really-worth-20-3/
Just because it dies doesn't mean we need a replica of it.
It hit the post limit of 200. It's not a sin to create another like it on these forums. In fact, it's fairly common. Totally didn't see who made it. Sorry about that.