I want to create a general consensus on how to add features and content so that we can have most mods running together.

Any new modders should read Heavenfall's comments on all posts. He explains this in great detail in almost every post. 

But Basically:

-Even if you don't want to make a mod for everyone else, at least upload your assets to the mod section so others can use your art and such for other projects.

-Balance everything you make. New modders will be tempted to make "epic" mods. But if your new Paths and Items are too powerful, it will make them undesirable for the rest of the community. The mod section is a great place to get feedback on how your are doing with balancing. Balance is the hardest part of modding... besides making unit art.

-Make sure you describe exactly what your mod does. Save us the time of going through every line of your xml to see what is going on. 

-There will probably a few major mods that work really well together. Since most everyone is going to use those, try making some added content and features that specifically improve those mods. Adding a new class or more loot to the random pool is a great way to start modding. When you do make a mod that is designed for another mod, make sure to label it as such and tell us whether or not it is also usable with the vanilla.

-On that note, label whether or not your mod is incompatible with any other mods. 

-Further down the road, your mods may get noticed by the veteran modders. The more work you put out there, the more likely a larger scope community mod is to be made with your help. 

(The game is still in beta 1, but once beta 2 I expect people will want to get involved in modding. I am happy to answer any questions new modders have.)