Hello, I absolutely don't know how to mod, but I wish there would be a to-do list ingame. It would be neat to write you own checklist, I often end the day and forget something I wanted to do.
At the very least, I wish that I had something similar to the calendar in my house that I could interact with to write myself memos for tomorrow and read previous ones. And then it could be expanded upon, to have a consumable or slotted item where I can right click use to open up another GUI menu that I could type myself notes in, or it could just be another key-binded function. TAB seems easily accessible for something like that.