who are you to talk you dont even have any 99 jobs
jk..
yes there is some general information that would be helpful like beast loyalty. some people dont realize that unless your pet dies you should never use up a jug.
or the fact you can cap reward potency.
as far as dd gear sets, I think a guide to using the spread sheets (which you can do in google excel) instead of just giving generic sets. I know lots of people just like to grab sets off a website or check people 10s of times to get their gear sets and not think for themselves but you know whatever.