Luxray is my absolute FAVORITE Pokemon ever! It would be so cool if they did a Mega Luxray! I agree with the Dark type as well. This design is really cool, but what I wish they would improve on Luxray's speed stat. It's need to boost up, but hopefully they boost up the Defense too a bit.
But some picture leaked out of all the next mega evolutions they were working on, and Luxray was on that list! YAY!
Luxray is my number one favorite pokemon, and I really like this. ^^ I have noticed that many people that want or think Luxray gets a mega, it will gain a Dark typing (if it gets an additional type). I really hope Luxray gets a mega evolution.