It's just a case that I couldn't explain as much as I wanted to within the limits of the format. I bit off a little too much for the scale of the project. It's not very satisfying but I suppose the answer is that the GM can make up whatever they deem is the right answer to those questions. I feel it's bad form for me to explain my reasoning outside of the product and expect that to suffice. I should let it do the talking even if that talking isn't good enough.
Next time I make something like this I'll make sure the scope is tighter.