I like the signs that show the position of the basket along with major features in/around the fairway such as stream beds, islands of trees or large trees in or on the edge of the fairway. This info is especially useful on blind holes where I cannot see the basket from the tee pad area. I can judge distance pretty well but I cannot see threw trees over hills or around corners. Distances posted on signs is generally wrong anyway. To me it's more helpful to know that the fairway doglegs hard right at that big pine tree on the right than the total distance to the basket.
I agree, like a caddy book for Golf tournaments. I love when courses do this. I always take distances as approximations because, like everyone is saying, you don't know who decided or by what metric they measured. That said, I absolutely use posted distances when deciding my line. I like to think I can approximate whether the sign is at least ballpark accurate or not.