Making this board a bit in advance. To discuss what tools you'd like to have as a modder. There are 2 types of modding i consider:

1. Scripted content mods that you make in Godot (if you never used Godot that's fine, is lightweight and I'll try to provide you with some good places to learn it). This is unsafe and you'll have to trust mod author.
2. Limited modding for some specific features, such as just adding models or some sort of scenarios (I didn't come up with much yet).

Please share what kind of stuff you'd like to mod in, so I can design the game to allow that.