I enjoyed the premiere. I am a huge Leno fan, so I am not super happy with the change. But I was willing to give Conan a chance and I thought it was pretty good for a premiere. Sometimes these shows take a little while to find their footing- Jimmy Fallon hasn't come close to finding his, IMO. And I had high hopes for him.
I liked the opening graphics a lot, they looked great. And the set is gorgeous. I liked it, I'll keep watching! I think he has much more in store for us.