I saw on the front page you done some edits, that's really cool. Even smaller updates are great for the wiki (I'll leave a message on your
talk page when I have looked it over

)
To your question:
I'm personally no expert on the whole item creation process, but take a look at the
Item Generation Tutorial, and see what you can deduct from there. You are right that it would be great to have all loot tables available.