@Emrys ,
I’m interested in contributing public IP. I think there are others who are contributing.
In general, I find a PSpice tool very useful but can be limited to basic building components (mostly because it started as an analog simulator). Most sophisticated models can be created using the basic building components but can be very complex to create, modify or reverse-engineer to find unpredicted issues.
C-blocks allow for easy and elaborate creation of extremely sophisticated models. It also allow for easy access to computer system resources where .subcir models don’t provide that easily or at all. I’ve created C-blocks to access the filesystem and perform string parsing.
Suggestion:
Propose a common version controlled repository (such as GitHub) that others can access with some rules for submission.
Len