Thats the reason why I thought it would be better without that glow. Because when on Silent Running, it would look like its been vandelised and spray painted blue. In other words, it looks strange.
Heres an idea, why dont you release seperate textures at the same time of the ship itslef. That way, if people dont like the blue glow, they can put in the alternate textures that dont have the blue glow on them.
Just a thought.