It's more narrow that that. The function of the document is to justify the remarks that Trump made in his "this is Hillary" speech, which is far from a complete listing of the issues with Hillary.
I think the objective is to stifle the press knee jerk reaction, which would otherwise be that every allegation Trump made in his speech is false.
With the substantiation, Trump and his surrogates can raise these "facts" at will, going forward.
Only 35 pages?