A few of the designs will likely remain popular to some extent with whatever few numismatists remain in 50 years, but the entire series will not likely be collected with the vim and vigor of past and some present collectors. The unusually severe nosedive in prices over the past decade for a series prone to ups and downs over time combined with the massive quantity of coins available indicates a growing lack of interest. Supply exceeds demand. Exceptions : hard core collectors (few), superb or superior specimens which will be the minimum acceptable. The series can be a crushing bore with 18 BTWs, 16 Boones, etc. I've studied and collected for decades and enjoy the subtle differences and original accessories, but I don't think it's for the average collector. The profligate modern U.S. Mint products have sucked enormous amounts of cash from the classic collector markets as well, spreading demand thinner yet for numerous classic series.