Hi! I'm not sure I understand what you mean. A separate tool for "drawing" regions like these manually instead of generating them?
Personally, I'm interested in procedural generation, not editors. Also there are too many editing tools (Campaign Cartographer, Wonderdraft, Inkarnate etc.) that together cover every possible cartography need - I don't see what my tool could offer that others don't. However I consider adding a "land painter" to Perilous Shores to allow marking which parts of the map should land and water and then filling it with details automatically.