Most people take as an advantage this in order to escape. For example during pvp (jumping on pvp bases and getting no damage). I believe this is a necessity on factions,to be honest this is how minecraft works.Adding back the fall damage would be more fun and we would feel the real difficulties that a true faction player faces(lol).
It will be added back next reset, that’s why I added the ability to upgrade this aspect :3. I will probably remove the ability to completely remove it.