Landmark, hidden, secret — a classification scheme for information in game situations that might help us better decide what to tell players, and when — https://diyanddragons.blogspot.com/2019/10/landmark-hidden-secret.html
Michael Prescott explains why you probably don’t need to use the OGL, and probably would be unwise to use the DM’s Guild or similar DriveThruRPG programs. “… That last one is so mind-bendingly overreaching that it’s comical. You’re giving them permission to negotiate for you, with themselves. It’s like the devil wrote it.” — http://blog.trilemma.com/2019/10/compatible-with-dungeons-dragons.html
It looks like real-world archery is much harder at range than typical rpg archery. Given that long-range missile fire is hard to make fun, it might be worth trying some harsher range modifiers — https://deltasdnd.blogspot.com/2011/03/basic-d-on-archery.html
The Wrong Kind of Wax 