Yup, the beauty and taste we all love are one genetic thing, and the foliage health and earliness traits are a whole other ball game.
It's a long and winding road, and very worthwhile I may add. Thank goodness for the cool surprises along the way in beauty and tasteville, but the long haul is for the plant that has it all, and that means side crosses, years of selection, I understand completely!!!
And when you get into the wild relatives breeding, there's a whole other layer which I could never do personally with my tomato growing resources... insufficient. I can only poach on other people's work with the wild things.