could use more of : spirit , perception , conviction 
(ROOT (S (VP (MD could) (VP (VB use) (NP (NP (JJR more)) (PP (IN of) (: :) (NP (NN spirit) (, ,) (NN perception) (, ,) (NN conviction))))))))
(ROOT (S (VP (MD ) (VP (VB ) (NP (NP (JJR )) (PP (IN ) (: ) (NP (NN ) (, ) (NN ) (, ) (NN ))))))))