As long as we remain fixated on the institution narrative to the exclusion of other aspects, our public prayer will reflect this. If the only important thing going on at Mass is the changing of the bread and wine into the Body and Blood, then our old buildings are adequate to that need. If, however, we believe that the eucharist is central to our lives and our participation in Christ's Body demands change, accountability, and conversion, then new architectural forms need to be tested by communities who take worship seriously. To the extent EACW has begun the discussion, the document is largely a fruitful one. In my experience, renovations and new buildings are influenced by other factors as well.
Cash is one.
Some interesting places were built 1945-1965 that began the modern trend toward simplicity. Pews were less ornate. Vinyl, metal and wood replaced stone and marble as materials of choice. The trends were already there. Most renovations I've seen mix the old with new ideas.