How much in the project is really D&D-specific? In your estimation, how much would have to change and be reworked in order to support, for example, Pathfinder 2e? PF 2e-support was the first thing I was thinking I wanted in this, but I am also atypical in that I don't even have a group and I'm just scouting around for a place I could use if/when I make one.