Even back with Continual Light, there's not a great reason why every city wouldn't be fully lit.
We play that all the continuous light sources have a limit - a spellcaster can only keep the number functioning that they have levels.
In general, I like UA. When it came out, we use all of it. Now, over 30 years later, it's just another part of the game that we change and modify. We use the bits and pieces we like, and don't use the pieces we don't. I don't think I've ever used any of the new races. While initially we moved...