Very good points about the implicit story that buildings tell about churches.
However, one of the most amazing churches that I was a part of had a run-down old building, but it was packed (standing room only)even for Wednesday evening services. What was happening inside the building was new and powerful, while the building was not. Buildings are not unimportant, but what happening inside the building is more important.
You might want to delete the unneeded reference to Eugene Petersen. He isn't universally embraced with the same vigor as that expressed by the speaker.