Since we've covered starting a suit collection from scratch and a tie collection from scratch lets say we extend that to sport coats. Lets say that a person (like me) wears coats 3 days a week, always casually, through all seasons. How many does one need to avoid repetition? What are the basics that should form the backbone of a collection? Fabrics for winter? Summer? What I have now will all be replaced in time so assume that I'm starting with nothing and build a collection for me.