While the changes are good, I do not think they go far enough.
Allowing full monitoring from someone two hops away from a suspect still can involve a lot of people. What if a suspect were to call Time Warner, then I was to call the same number later that day? It could potentially be a very large number. Also what qualifies as being a suspect? It may be that there are a half million suspects, and a majority of the earth's population is two hops away.
It also doesn't remove the First Amendment violations on the National Security Letters.