From: My Own Private Hell
I'm not exactly sure what you refer to as a community mod?
From my understanding, one that is created by the community, everyone involved provides resources, generally there is list that is made, a master plan as it were, a list of folks in the theme group, creators and testers, all the things needed for the theme. Folks then state which part they are going to complete, for example, ships, races, troops for graphics, then the text files, biases, races, policy, design templates, systems, designs etc. With the amount of work that has been put in around here on non theme parts for DW, like planets, UI etc it could also encompass a secondary overwrite mod. Last decent one I saw was back with NWN and that was moons ago, there a great idea but do take a fair bit of organizing, easy access to the files currently being worked on so that testers can take the current revision and give feedback, an FTP dump from someone in the group with password access to avoid any 'problems', best done with a small group of dedicated individuals, no more than 6-8 and a small group of like minded testers who can give good feedback on any problems. An overall individual forum thread to give direction and feedback for the theme which should only be used for the theme creators and testers and a secondary one for overall updates, questions, ideas etc from the community. Folks are always ready to say, 'I will do that' but it is following up the words, hence the dedicated individuals. You would also have to take into account that folks have real life priorities and things can be a little slow, but if done right they tend to be the showcase theme / mod for the game, like Haree78's Extended theme is at present.