Inspired by FapfvlIdea:
Expand the current weed script to allow players to create a grow house in areas like Ganton, El Corona, and East Los Santos. Being able to create grow houses within trailers would also be a good idea.
Player requirements:
Must purchase soil, plant pots, and grow lights, in addition to the current requirements.
Unintended consequences:
This will likely make undesirable properties (such as trailers) desirable and provide properties with more utility. This could also provide even more usage of the property script.
Balancing:
If a police officer goes past a property that is growing weed above a certain grow level (60%?) then they will have a random chance of smelling marijuana from the property. This chance could increase as the plant gets closer to 100%. If a police officer receives this message, they can raid the house as if a suspect was inside.