Wow, awesome dream....I have learned that real visits often come with them being brightly lit, or flourescent in color. I agree that the end of the end was symbolic, but the message was for you to understand. I know it's very hard to lose a sibling...you grow up with them, they are an extension of you, their physical mortality seems like it's partly our mortality, too.
It sounds like your brother loved you very much, and you were open enough for him to get through.
I don't believe there is death, only of the body....not after everything I have seen and experienced. I wish mainstream society would get onboard and science would be more open minded....and we could start proving these things exist through metaphysical science.