Now that money worries are (hopefully) not an issue anymore, I really hope they consider releasing the source code.

Due to being written in C++, mods are quite restricted in what they can do (especially in comparison to more recent games like Rimworld that are trivial to decompile due to using C#). Especially frustrating because performance really isn't up to par - a lot of the old generational forts from a decade+ ago are really only possible now if you tailor your gameplay to account for performance issues.