How difficult would it be to implement lets say address that ends with .xyz using namecoin?
Is there a possibility for expansion past .bit?
Can namecoin be used to have other than .bit addresses?
Re: Can namecoin be used to have other than .bit addresses?
Yes, it's pretty simple. You could grab an unused namespace, x/ for example, and then get a nameserver to resolve all names under that namespace to name.xyz.