I think it is subject to your own personal preference. I have actually been in the space and toured the entire facility. Looking at photos on a website does it no more justice than looking at any other religious space on a website.
If you do visit Los Angeles I would encourage you to take a tour of the facility. There was great care taken in the design of this space.
It might make a great "Crystal Cathedral". But is it appropriate for a Catholic cathedral? I don't think so -- it lacks many of the necessary ingredients. And their presence and absence can be ascertained from photographs, you don't need to be there.
Cool organ, though.