These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Seasonal Rot: Season 4 has been notably poor compared to other seasons. Due to Season 3 not being that well received (to the point where they stopped production at 14 episodes and had the budget lowered), the whole show went through a revamp to try and get more appeal for the crowd again. While the updates to the animation, the cast and the trainees moving to advanced training were well recieved, the season was mostly Strictly Formula (trainee has difficulty learning something new, and another trainee has a usually useless subplot) and overly Merchandise-Driven, lacking the balance of toyetic elements and story the other seasons had.