I’ve been getting a lot of questions about Dirt 4’s nefs files recently. At this point I have no plans to create a new application for this file type. I don’t have as much time, as in the past, to work on new stuff. I may eventually get to it, but don’t hold your breath.
On a side note, I have created a Discord server for Ego Engine game modding. I encourage everyone to join in on discussions with fellow modders. It’d be a great way for the community to help each other out.