Hey I've really enjoyed all of this. Not as much the pages where some were arguing if God does or does not exist, but overall I think this a very fun discussion!
Anyway, some of my thoughts:
I think this is really great because you could very easily say he draws you in with a bunch of theological ideas and concepts and metaphors, but in the end seems to be a movie that disproves God. On the flip side you can view it very simply as a space adventure that is an allegory/metaphor or whatever for God that even demonstrates the possibility of a being who is able to move through time (like Brand describes the 5th dimensional beings) which is something many spiritual people will profess that God can do.
It's great because it could CLEARLY be a religious film and it could CLEARLY be an anti-religious film.
Oftentimes we see what we are looking for, whether the artist intended it or not. I think this could be the case here with several of these ideas, but that's okay. I also think many of the ideas were likely included by Nolan to make us think, or, maybe, just for fun! Writers and filmmakers love to make references to other media in pop-culture or even subtle references to films past, and I think this can also be the case here.
I thought it was cool when people pointed out that Murph was 33 when she figured everything out but...isn't she 35? She was 10 when cooper left, it took them 2 years to reach the wormhole, then they spent 23 years on Miller's planet.
10+2+23=35
As far as the trinity goes (I'm Christian, but I view the Godhead differently than traditional trinitarians do), I think of it more like this:
Cooper is the literal Father of Murph and Tom
Cooper is the Son because he sacrifices himself to save mankind
Cooper is the Holy Spirit because he communicates the message to Murphy
Also I loved when someone pointed out that he talks to her through books. He used logical, tangible things (evidences), combined with love and feelings so that she would understand.