I'm not sure how much I like the idea. You see Star Wars Lego characters all of the time on commercials and in the store (if you you are/were into legos, you probably have some). That was half of the charm in the video game (my impression anyways, never played it).
That said, I can't recall ever seeing Batman legos. Also, the way a Star Wars game plays compared to a Batman game will be largely different. Just because they did go before on the Star Wars games is no reason for me to expect the same for this.
I need to pick u[ the Star Wars games sometime....I've been meaning to but something else always grabs my money first.