Bah it it's not Alan Scott, it's not worth my time.
I have never enjoyed the Green Lantern Corp concept, and I have always found Hal Jordan boring.
People will hear Green Lantern and expect it to be John Stewart from the JL/JLU cartoons. Prepare for complaints of racism.
90% of the movie goers will have never seen or heard of the JL/JLU cartoons. And of those that have, 50+% will know the comics well enough to know there are other Green Lanterns. I don't think WB is too concerned about being called racist.