There is always something you could use but don't have! But this is a very comprehensive list!
You could keep adding more but it becomes too bulky to actually use! Some people I've spoken with have a basic small pack and a larger one for more serious situations. That may be the way to go...
Definitely! I plan to pack in my smaller kit all items down to where it says "If you have room" or something to that effect. Then have a more comprehensive kit on hand at the homestead.
You can absolutely keep thinking of items to add and, like you said, can get so bulky that you won't bother carrying it. It is best to rank each item from greatest need/uses to least need/uses while considering the most likely scenarios you will encounter.
Thank you for your comments! It is greatly appreciated!