As with our other titles we don't really have mod support outside the graphics and music, etc.
In this one's case we could get away with it easier since there's no multiplayer, but "no multiplayer" is not actually in stone. The main thing is coming up with a model that players would actually find satisfying.
The other big issue is that we aren't done with the game, and while I'm fairly meticulous at maintaining save compatibility and such, it would take a _ton_ of extra work to maintain backwards compatibility with previous mods when doing an update, which would generally mean smaller and fewer updates. Given that I'm struggling to even do one update a week at this point (related to a certain five-week-old, I'm sure) I don't think that's a good way to go. And the alternative is potentially all mods breaking every few days if I actually have some spare time to
implement some of my more nefarious schemes work on the game. Which doesn't sound like it would be very pleasant for the modders
That said, what specifically would you want to mod?