This threads needs to have some things put into proper perspective. Churches used to be built big and elaborate for a reason. Tall ceilings were meant to draw one's gaze upward towards God. Picture windows, frescoes, and carvings were used to tell the gospel and other biblical stories to the largely illiterate masses. There is nothing wrong with having large, beautiful buildings, showing the creative handiwork of various crafts and tradesmen.
Can things be taken too far? Of course, but that doesn't mean it's all bad.
Just a reminder to all that RCC discussion is not permitted in this forum.
As to the OP, I am divided. Sola scriptura has been quite disastrous but there are problems any which way things go. It's because we are human. There were problems in Paul's time and there have been problems since. There certainly is something to be said for having a spiritual leader who can shut down errant doctrine but if he isn't accountable to anyone, then that can just as easily lead to error. The EOC does it better by having a leader among equals, iirc.