I have a few questions. I will make them simple and basic as I can and see if we need to get more complex as answers come in.
1. How big is your home brew world?
a. File size (not just a map or two but how much material do you have)
b. Actual scale of the area you use (micro v macro)
2. Do you use entirely original material or do you integrate various favorite products?
a. Favorite novel/movie (any medium really)settings, characters, stories that are involved and to what degree if at all?
b. Pre made modules or old modules or your own stories?
3. Do you allow your players to contribute?
a. How much and how specific are contribution?
4. How long have you been developing this world?