A lot of people praise B2W2 but really overlook SM and USUM which does what B2W2 did AND more. Hopefully in the next few years Gen 7 will get the Gen 5 treatment from fans as people who grew up with it (like me) look back on it and realize how great these games are.
Gen 7 is turning 10 next year. Maybe by then fans will begin to appreciate it more. It brought so much to the franchise, it's a shame the fans prefer the DS games and just gloss over Gen 7.
Has refighting the past villains as a whole postgame story. Only lets you refight 1 past villain. Changed the story but kept the general basis of the original story. Changed the story but lost what made the original story brilliant. Only a few major boss fights are difficult. Most major boss fights are difficult. This and SM changes the formula of further games onwards. Reuses the old formula from Gen 4 before.