Before you get your hopes up about modding Fallen Enchantress, you may want to read this thread...
Here are a few highlights from the developers:
Unfortunately, there won’t be a moddable DLL for War of Magic or Fallen Enchantress. It’s something we’ve wanted to do, but there aren’t the resources for it right now. The engineers have been busy working on implementing Derek’s new vision for FE and helping to improve WoM in recent patches. As Brad has talked about elsewhere, we’re currently hiring new developers to help out, but the priority for who we have available right now is making the gameplay for FE great.
I think Jon Shafer was hired in part to add more modding into FE, right? JON!!! JON!!!! JON!!!!
I’m lending my experience and helping guide what we do with modding in the future, but I’m not personally implementing new modding features.
Sorry guys, it's disappointing on this end as well.
Our first priority has to be deliver a solid, fun core experience. When we've accomplished that, it will give us the opportunity to flesh out the other parts of the game. As you all know, the launch of Elemental was rough, and being a small company means its impossible to address everything we want to at the same time.
Towards the end of the thread it gets a bit more promising though. Ultimately, it looks like FE is going to have the same modding capabilities as WOM with more of the values and such exposed to the XML. It will still be less flexible than Civ4, but more flexible than Age of Wonders.