Any thought on this Azorious casual deck ?

Hi ! I made this deck for casual play with my friends, played only a couple of games with it , seems to be doing allright but i'm very tempted to make it more aggresive :

http://deckbox.org/sets/707831

Seems to be having some troubles against mono black agrro and had some problems with BU reanimator Thinking about changing mass removal and few creatures to more effective more agressive ones, changing Render Silent for a cheaper Counterspell ,  throw in Path to Exile.

Any thoughts or suggestions ?
Any Feedback welcomed ;]