Guys, what they want at the interview is what is being requested. If you have foreign stamps - get them translated. Other than that, they want to check that you have declared the correct travel - and it matches their records.There is at least anecdotal evidence that being able to present some types of evidence (translations of stamps, travel history) at the interview can expedite the process.
Handing over a ridiculous stack of documents without being prompted for it is not likely to be useful (and may be counterproductive), but that is not what is being recommended.
As long as you've done this, no need for extras - unless they request it! Don't overcomplicate what's fairly simple.