I do think that he has become a great character (And very popular.) since his return, but part of me wishes that he never really came back in the first place (Like Aunt May, Ben Reilly and Jason Todd.). I think that kind of sunk my enjoyment in Brubaker's Winter Soldier story when it first came out. There have definitely been some good stories with him since he came back (And we wouldn't have gotten The Winter Soldier movie or his role in Civil War.), but I still wish that he would have stayed dead. What do you guys think?
For all the many reasons the other posters have given. It just took away so much from a classic story, and he really isn't that guy anymore. He could easily be any other person with a retconned relationship with Steve.