it would be better as a diary or documentary 
(ROOT (S (NP (PRP it)) (VP (MD would) (VP (VB be) (ADJP (JJR better)) (PP (IN as) (NP (DT a) (NN diary) (CC or) (NN documentary)))))))
(ROOT (S (NP (PRP )) (VP (MD ) (VP (VB ) (ADJP (JJR )) (PP (IN ) (NP (DT ) (NN ) (CC ) (NN )))))))