I'd like to see this mod completed. I've had a similar idea a long time ago. Basically a medieval fantasy x-com, where instead of X-com, you have an order of knights which deals with a mysterious invasion, along the same lines as x-com's story, but with typical fantasy monsters instead. Same concept of funding, from defending different kingdoms, and setting up bases(castles). I thought it would be interesting to have wooden stakes and crosses vs. vampires in x-com, reload your bow from a quiver, have different types of melee attacks (slash, stab, disarm, etc.), unload your troops from boats and caravan wagons instead of planes, and lots of magic stuff. I'm curious how mod-able this engine is.
I made this mock up a very long time ago:
But I've been making a lot of pixel art since, some of which I might be able to adjust to fit into this engine. I'd probably like to help with graphics if the project is still active, but it would be nice if I didn't have to deal with PCK format.