The Lexicon-Grammar of French is a dictionary with structured syntactic-semantic information. In order to assess its exploitability in language processing, we survey four criteria: readability, degree of formalisation, degree of validity of information content, and richness in information. We contribute concrete examples to inform this discussion. We compare the significance of the criteria, in order to evaluate the validity of the priorities retained and of the compromises adopted in the course of the construction of the Lexicon-Grammar.