Hey Gus, welcome to our little corner of the internet. This is generally one of the better online car forums, so hopefully no one will ever beat you up for asking questions we all have.
The unevenness of the ambient lighting is pretty commonplace I think. My car has it and I've learned to live with it. I think that others have had theirs replaced. I'm sure they'll chime in. All-in-all, do what's right for you. If you're working with a good service department, they'll want to keep you happy.
Welcome again.

__________________
CURRENT: '24 M4C Conv
RETIRED : '23 M8C Conv | '20 X4 M40i | '18 M4 6MT | '13 M5 6MT | '08 550i 6MT | '04 545i 6MT | '98 540i 6MT | '94 530i 5MT | '84 528e 5MT
Other retirees from Chevrolet, Buick, Subaru, Honda, Acura, Merkur(!), Volvo, Saab, Audi and Porsche