I have been playing and GMing rpgs for a number of years, and a little while ago I had what I believe to be a really good idea for an original campaign setting for Savage Worlds, my system of choice. It is complex and ambitious - far in excess of anything I've even run for myself before.
At least initially, my intention is to spend some time fleshing out the idea so that I can produce a few simple scenarios/one-shots in the setting, and see if my regular players enjoy them. However, assuming that they go down well, I am very interested in taking the idea as far as I can, with the possibility of self-publishing.
I have found this question, which answers many of my queries regarding the actual publishing part, but what I would like further information on is pointers/advice on the process of developing a setting/campaign of signficant size specifically for other people to run. I've only ever written stuff for myself to run up until this point, and would welcome any guidance on gotchas to watch out for, and considerations that I might not normally be aware of.
So, in summmary:
When writing a campaign/setting intended for other people to run and possibly eventually to publish, what particular considerations and issues arise regarding the actual design of the setting, campaign and the scenarios/adventures that make it up that you do not find when you only write adventures for yourself to GM?
Based on the comments below, I thought it was worth clarifying...
I am not expecting/wanting answers only from people who have actually published here, as I think it is possible for people to think through the process and how they would go about it if they were to embark on the same endeavour.
I am less interested in the actual publishing part as I have managed to find a number of resources to help me here. I want this question to focus on the process of designing and writing the content.