Their groups always have the least longevity and get forgotten pretty easilly compared to the impact they had at their prime time. Compare WG or Miss A to SNSD and 2ne1, even T-ara, Sistar are doing better in the memorability 2PM to BB, SJ, TVXQ, even Shinee Got7 to BTS, Exo, RV, OMG, Lovelyz, even Winner and Ikon in some way And it seems that Twice is on the same road.... They all are pretty much forgotten now, but they all were HUGE at their prime time. They were maybe even better than other groups for a year or 3 and than suddenly they are forgotten. It is SO weird!!! For example 2PM (I know this period the best) was out there next to BB in popularity during few years (2012-14), they really were HUGE and suddenly next year (2015), they are noone. Like wtf!??? How!??