Newsweek has an insipid listing of the 50 "most influential" rabbis in the US. Number one is the Wiesenthal Center's Marvin Hier. Number 2? Chabad's Yehuda Krinsky, who is described this way:
Krinsky has truly built a “shul” on every corner and brought the Chabad movement mainstream prominence. He is the leader of Chabad and its CEO.
The only other haredi rabbis on the list are Zalman Titelbaum of Satmar, who comes in at number 15 (and the article does not say why he's on the list), Artscroll's Nosson Scherman and an Aish rabbi, both much further down on the list. The list identifies 'rabbi' Berg from the Kabbalah Center as "Orthodox." (He comes in at number 4.) And it has Saul Berman, Modechai Gafni's disgraced supporter, at number 14.
Krinsky really is extremely influential. Is this good or bad for the Jews? Unless Rabbi Krinsky comes out and clearly distances himself and the sections of Chabad he controls from all forms of Rebbe-centered messianism, I would say Chabad's influence is a bad thing.