Hey all, I've started work on this little project as a first step for deeper modding of Chrono Trigger for Steam.
It currently is very bare-bones, and can't actually edit anything at all, but it can load a Map_000X.dat extracted from Chrono Trigger along with the worldchip_X_X_X.png files that contain the visual information of the map.
In essence, this current version is no more than a map viewer, but I have a clear roadmap to how I will enable editing.
The project is up on Github:
https://github.com/Kiloku/Time-Egg