So just as I feared, the Underdark got turned into a bright neon city. Apart from the complete loss of spooky and dark atmosphere that oozed with danger, I'm extremely sad that this patch made torches/Light cantrip and Dark Vision completely obsolete. The Underdark can now be completely navigated without a light source, even with characters without Dark Vision
When talking to Halsin about the Underdark, he mentions how it's a terrible dark place where people go missing. This no longer looks to me like a place with danger lurking around every corner where the sun doesn't shine.
Well.... I guess it's no longer the Underdark but the Underbright.
The lighting change is absolutely horrible and should either be reverted entirely or we should get a toggle/slider, allowing us to adjust the lighting and colour saturation.