No offense, but is DwarfEngineer or anyone who is in a position to address this aware of this? I do realize that Dwarf Therapist is a very popular tool and this thread gets frequent posts from users with issues and concerns. So, it's not surprising when a message or two gets buried under new posts. But, IMO, it would help immensely if it was acknowledged with something like, "we are aware of the problem" or even "sorry, but I'm afraid this can not be fixed."
I am aware of it, so was chmod; it was an issue when I started maintaining dwarf therapist, and hasn't reached a high enough priority for me yet. You can track progress of the issue
here. Support for mods is something that I would like to add at some point, but there are still a few idiosyncrasies and features around the core game that I would like to get done before I start working on mod support.
There's a good chance that a lot of features around custom content will require reading raw files, which is something that dwarf therapist hasn't done to date, so there's a lot of infrastructure that will need to go in to it to do it right.
In the future, if you feel that an important feature is being ignored, please open an issue on the
Project page. This way I will receive e-mail notification and you'll have a way to permanently track progress, make notes, discuss the feature request, etc.