Vince_Snetterton
Explorer
It can't be done with a Real World example. D&D does not have sick kids hospitals, vaccines, programs for Dyslexic and Autistic kids, etc...Let's try a real world example. Give me one stat and one minimum you would like to see in place under this system and I will see if I can come up with a viable reasonable character concept that will fall under the threshold that you set.
But if you going to use some example of some Hill Dwarf grew up congenitally weak, but brilliant, and his family shielded him from the brutal winters, chill night airs, and dangerous animals until he was an adult.....nope, not going there either. I am sure that we all can handwave a backstory to justify any statblock for any species. I can create a backstory justifying my char starting with 20's across the board. But that does not fly in any game.
There must be genetic differences in the species that are reflected in base stats, one way or another.