You have very good insight. I actually am looking at an ancient dog breed for my next dog, the Beauceron. Thanks for your time!Your resume speaks for itself. You know dogs and dog breeds and definitely do not need my input. You have seen and been with them all better than many .
I am here to help people with less knowledge and less experience than you .
Since you have been here may I suggest you look at these not so much popular but amazing and proven dog breeds that may suit your need and is not very popular:
Black Mouth Cur: The oldest American breed with proven Jack of all trade master of none personality that was the choice of early settlers.
Chinook: Amazing all purpose dog originated in New Hampshire
Appenzeller Sennenhund : looks like smaller healthier short hair but ancient version of Bernese Mountain dog
Hovawart : Just an amazing ancient German breed that was replaced by more popular German Shepperd . This is my dog breed of choice when I am ready for the next puppy.