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