I love GTA V, Fallout 4 and CEO missions. So I'm curious if someone can combine these into a Warehouse mod for Fallout 4. First you would need an NPC to talk to, he/she could give you radiant missions much like the brotherhood mission 'Quartermastery'. This NPC could be any settler, and the position could be called Manager.
The item that they are assigned to will worked more like the food sources, in that there will be a bunch of them. The items should look like the soil plots in miscellaneous resources section. Once a mission is completed, the item you were sent after will appear in the plot area the NPC is assigned to (Max of 8 plots). Once all assigned plot are full you can do a sell mission where you can send a brahmin convoy to different cities around the wasteland for profit.
This will not only make the player money but lend more purpose to the use of the factory pieces. If you have questions please ask, I think this would be so much fun to use in Fallout 4.