Sure you don't NEED them, but what if you'd LIKE to have them anyway. Star Wars means many things to many people. For me, the Jedi are what make Star Wars not just another generic Sci-Fi film(s). For one of my friends, its the ships and he doesn't give a crap about Jedi.
For some, not using any movie characters in their game is the way to go. For others, they'd like to use them, and for others-again they'd like to face them in combat.
Also, letting the devs concentrate on what "most people" want... how do we know what most people want. These forums are just a small minority of players as is any RPG forum. Even if we did a poll to see what the players want we'd not have an accurate depiction of the answer. Not every player comes on the forum. Not every forumite will vote.
I personally hate adventure books. Hate them! But does that mean the writers shouldn't have released them? Does that mean I feel they shouldn't have wasted their time when they could have been doing something I wanted. Of course not! Because I recognise that there are people out there who DO like them.
****, there are some selfish people on these forums...