This may not be popular, but large cities with the over use of lighting have washed out the night skies for miles beyond their city limits. Stars and astronomical seeing has be severly limited in the last few decades. Many of us when we were were kids, even living near cities could actually see the night sky. However, much of it has been washed out by glaring light.
I am all for a memorial, but I would prefer something different than lighting up the night sky even more than it is. Many cities have already adopted ordinances where new lighting fixtures must direct the light downward where it is needed, not scattered into the atmosphere and wasted. It even takes less energy to light up an area if the light is directed downward.
Again, I am all for a tribute, or memorial but not with more light glaring upward into the nightsky.