The Catholic church should disassemble some of those old, empty churces in Europe that have no parishioners anymore, crate them up, ship them over and re-assemble them here. That plus the Latin Mass and an upgrade in liturgical music should bring back the flock.
I personally don’t care what the church looks like I only care what comes from the pulpit and the people. IMHO, the more minimalist the better. I am there to worship G-d not the building.