An interesting article written by Fr. Thomas Reese SJ about his ideas for Vatican reform can be found at:
www.commonwealmagazine.org/article.php3?id_article=2200
I won’t try to summarize it here but leave it for you to read. As Fr. Reese himself says at the end, the chances of his suggestions coming to fruition are close to zero, and perhaps rightly so, but he has some challenging ideas from Church history.