>>33431720>lack of postgameBW's postgame is incredibly barebones. In these games, you're able to explore the non-plot related locations that were locked behind for no reason, and capture all the Seven Sages. This quest is about on par with the other two Looker Quests in XY and SM, where you have to go to specific locations to do a certain task, then go to another one and repeat. BW2 adds plenty of side content to keep things unique. However, the PWT is less unique than other third version games' facilities (Emerald and Platinum's Battle Frontiers) and slides by with nostalgia pandering. There is no streak in the PWT, either. There are no standard Gym Leader rematches, either. Those were removed in favor of the Unova Leaders PWT. Memory Link exclusive battles with Cheren and Bianca are one-time only, even though Platinum Battleground fights and HGSS Red, Silver and Dojo fights are repeatable.
>bad plotBW1's plot is very debatable, some people love it, while others hate it. BW2's, on the other hand, is a step down in every way, and is horribly handled. Team Plasma has been brought back, despite Hilda (or Hilbert) arresting all Seven Sages to prevent the group from ever being reformed. (The prompt to do this quest was not even optional, as soon as you leave your room after defeating N, Looker tasks you with catching them.) Plenty of exposition is made for one-note characters, or characters that make no impact later on in the story. Pop Roxie's storyline shows up simply to introduce Pokestars Studio and force a tutorial onto you, and Hugh shows up at every opportunity just to get back at Team Plasma, with his development arc comes out of nowhere despite him hating on them the entire game.
While not horrible games, BW and BW2 suffer from very similar problems that the "modern/3D" Pokemon games do. It'd be unfair to ignore these issues or handwave it by simply saying "It was fresh/good in BW" only to use them as negative points in the later games.