I think the entire philosophy of ST's and their worth is in flux.... gradually changing from being viewed as potentially productive to 'concentrate solely on eliminating the negatives'... and no one has mastered it yet. So we're getting neither.. production OR limited negative results.
Not sure where ST plays are headed but I think in the very near future ST's will be radically different than we see today. KO's, PR's, will go the way of the dinosaur, I believe... but I have no idea what the 'new' will be. - JamesJM