This is the real interesting problem. Even simple subtle decisions like "should this list be kept sorted, or have new things added to the end" determine under

This is the real interesting problem. Even simple subtle decisions like "should this list be kept sorted, or have new things added to the end" determine under what conditions you will hit a new conflict and when you won't. List of enums, add to the end, and if 2 branches grab the next enum value then you'll see a conflict. List of lets say URL prefixes keep in order, then most randomly added URL prefixes will not collide or conflict, only conflicting if you get 2 things trying to operate on the same prefix.