The plot itself lacks coherency and relies on nostalgia to bring its viewership in. The characters themselves are poorly developed.
The story misses the friendship and unity of its predecessor as well as strong female characters.
The entire original female cast has been pushed back into patriarchal roles.
The relationship between sesshomaru and Rin is extremely questionable. Sunrise could have at least said clearly how old she was so that fans could feel comfortable that she was an Adult and not a child.