Definitely an interesting thread. Goodluck on the rest of your project. Looking forward to seeing the progress
When I try to look at it from an outsiders perspective... I agree with you.This thing is built like an actual tank I'll give you that but some things just make me ask "why"?
you might want to take another look at the 4x4 with the Dado cut in it that is holding your acrylic sheet in. When I look at that I see a potential for the post to split right along the grain. I suppose the aluminum channel along the bottom would help with this but perhaps a welded steel frame would work better? Look at the grain of the wood on those pieces and you will see what I'm talking about.
just something to consider. loving the progress though, going to be a sweet build.