+1Ferk wrote:I'm surprised the 4th option got so much support.
It's both impractical and unrealistic. Plantlife will grow too slowly so people will end up having to use mese lamps anyway if they actually want to farm efficiently, and yet it will still grow in places where you might not want it to grow and where it would be very weird to see plantlife. Even if it takes 2 weeks of actual time for it to grow in the dark, it will still grow in high uptime servers so you will still find weird places where plantlife would make no sense otherwise.
I'd rather see special underground farmable flora for variability and to make underground areas more interesting. But if that's too hard to implement, at least having to place a special fictional source of light like option 1 suggests adds some interesting aspect to building underground forests, adds some cost for doing it and kind of makes some more sense.
Also, Option 1 is easier to understand. (KISS method)