This is a great question and a hard one to answer. When I think of Pavilion it think it should have multiple things to do, a restaurant, a couple rides, maybe an exhibit. To me, one ride does not qualify as a pavilion.
The Land This is the best example left of a pavilion in Epcot. There are places to eat, a great ride, and places to learn something about the topic, living with the land. It is an all around experience.
Living Seas This is also a great experience, maybe a little less coordinated than the land. There is a great place to eat, a good show, Turtle Talk, and some great places to learn about water creatures. It is missing a great ride to make it complete.
Other great rides
>> Spaceship earth and Universe of Energy -- Both these rides are great and still are worthy be enjoyed.
>> Mission: Space and Test Track -- Both these rides provide a one-two punch to the thrill factor for the park.
Imagination Institute / Journey into imagination-- For such a wonderful topic, how can these attractions be so DULL! The original Journey into Imagination had some class to it. These attractions drag down the reputation of Epcot.
Innovations -- It is just TOO commercial. I keep on feeling like I am going through a timeshare presentation in which I am supposed to sign up at the end. Disney needs to scale back the sales pitch and revamp this exploitive excuse for an attraction.
While I agree that Wonders of Life needs to close, I did love the Cranium Command. The concept of the wonders of the human body COULD be the best thing at Epcot IF they moved the pavilion where people could find it and presented an updated exploration of life.