[jfrisby]

To use your example -- how desirable is it to generalize "I change my name" to something "reusable"?

I'm finding these days that a pairing of .feature to corresponding step definition file allows for fluid language, simple step definition code, and well-compartmentalized messes (as opposed to the big ball of mud that Cucumber step definitions often become). Code reuse can happen through test helper classes that are called from step definitions as needed. (FactoryGirl would be an example of a very generalized test helper class, in my mind -- but more system-specific ones can be handy, albeit one wants to avoid making stateful / complex test helper code!)