Ah, so this is where the Hamburg Ballet fans are! I almost never see any reviews or information on them in English, so I am pleased to see this thread.
I first saw them when they toured the US some years ago (they were my introduction to ballet) and I am lucky enough to now be able to see them every few months or so. This season, I've seen Romeo and Juliet, Othello, and The Little Mermaid, and I'll be heading to Hamburg for the Ballet Days in the summer as well as seeing Lady of the Camellias in May.
On the topic of new dancers: I think there are a few promising names. In the corps, I like Sasha Riva, Lennart Radtke, and Marcelino Libao, and Emanuel Amuchastegui shows promise as well. I don't really know the rest of the corps men well enough individually to say. I just saw Sasha Riva in The Little Mermaid last month and I don't think he could have been any better. Of the women, Xue Lin performed the lead in The Little Mermaid recently, which must mean someone has confidence in her - I didn't see it, so I don't know how she did. Emilie Mazon, who is an apprentice, impressed me in Othello.
I think Alexandr Trusch is just wonderful and I'm really pleased he was promoted. I saw him in Romeo and Juliet last year and he was amazing (with Florencia Chinellato who was also great).
As Angela and annamicro point out, though, they have some really special principal dancers at the moment. I'll be so sad when pretty much any one of them retires. Especially Alexandre Riabko who is my favorite.
I do think, re: the earlier comment on younger vs. older principals, that Edvin Revazov is pretty great - I've seen him in roles as different as Tadzio and Romeo and Diaghilev and he was great each time. I haven't seen Anna Laudere in that much so I don't really have a strong opinion, but for the one lead role I did see her in, I admired her dancing but found her acting to be lacking.
Anyway, my point in all this is that I feel that while Hamburg does have some legendary, irreplaceable principals, I do have faith in the future of the company from the younger dancers I've seen so far.