Never cared for titles. Too many, especially in the sales area, are a joke. They are completely void of meaning.
When I was consulting, I never had a title. Now in the corporate world I have one, but I prefer to be called by my first name. While the owner agrees with me, HR insists.
What would be of greater use is to have your signing power on your card instead of a title. At least with that you get some functional information instead of fluff. And it creates the real departmental hierarchy.