Unfortunately the concrete platform for the altar, ambo and cathedra is precisely that, a platform and not an authentic sanctuary. Why or why can't we get this right in 2018?????????? However, having a canopy or some kind of corona/baldachinno over the altar is a very fine restoration and should be mandated for every Catholic church as it was prior to Vatican II!
I visited the Crystal Cathedral shortly after it was acquired by the Catholic diocese and I was surprised that the floor space is much smaller than it appeared on television or in photos. The chairs were very low, movie house type chairs, that folded up when you weren't in it. It needed help in terms of maintenance even when it was the Protestant Crystal Cathedral.
This is an artist rendering of the final product:
As a Protestant Crystal Cathedral: