There may become a marjet correction/inefficiency that will allow for midrange shots to be useful. Basically, as others have pointed out, if you can hit them at a high enough rate combined with team defenses that are designed to guard against 3s and the paint, it may be available to exploit. But you have to be very good, like KG level good. More likely, if Tatum is going to be a star rather than just a nice player, he will have to continue to get to the rim, turn those ling 2s into 3s, and use the threat of a good midrange game to open up passing and driving options.