Yes, but the problem is that the boost of the emissive level makes most of the glowing materials appear to be white:
Keeping emissive level to 1 is better I think:
But now we are back to the first problem, where some neons are too faint.
However, by a small change to the glow layer, we could allow the user to boost the emissive for some meshes and not other:
Note: to perform those screenshots, I directly modified the shader thanks to Spector.