>>6970101This.
Since they're pretty much a lock for producing more seasons, I'm fine with them knocking out episodes about lesser toy lines, especially if the focus on those episodes is as much about how they failed as much as the episodes about more successful toy lines highlight how other merchandising attempts can get lucky or benefit from savvy industry knowledge.
Also, just because the series has already covered the major pillars of shit that /toy/ gets all juicy about on a regular basis, that doesn't mean they couldn't do find material for another 3 seasons if they wanted to. Shit, they could do whole episodes about fucking Play-Doh, or cereal box toys, or board games, or WAM-O, or Gundam, etc, etc.