That's a matter of how you look at it.
While it does not have nifty special abilities, which provide flavor, it also does not enforce a certain flavor and restrict the class that way.
I really like that they have made it such a 'bland' progression, because then it can fit to numerous different character concept and thereby support a lot more flavor than a class with tons of highly specific special abilities can do.
The Eldritch Knight is a mechanical class, a solution for fighter/mage multiclass characters to become viable concepts from a balance point of view. It doesn't need its own flavor, that's provided by the character, which is not hindered by the prestige class.
Bye
Thanee