The group I game with is using a home rule that if you are within 1/2 of the ranged weapons short range the damage die is open ended. Also there are class features and spells that enhance ranged damage. I don't see anything wrong with ranged damage.
I have made a few conversions. 5E to Birthright (which others have also done) was one of them. All comments here are great! I personally was not a fan of class restrictions. Bottom line make it your game and have fun.