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.
Canon Sue: It's very hard to see Ichigo as anything else but this, mainly because in spite of having tons of characters, the anime focuses more on her and her personal triumphs, even against obstacles she really really should not succeed.
On the other hand Ichigo is the central character and Audience Surrogate when it comes to the workings of the show so it makes sense for her to get the most focus. Ichigo also doesn't win everything such as the third spot in Tri-Star but when she does she goes through very intense training even for fairly simple obstacles.
Designated Protagonist Syndrome: How some fans feel about Ichigo, feeling she isn't as interesting as her co-stars and tends to overshadow them focus-wise.
Franchise Original Sin: The first 3 episodes of second season is criticized for reusing the same insert song, which is a rock remix of the second insert song of the first season. This also happens in the first season, albeit that it was the first two songs that get recycled for 3 episodes as well.
The Problem with Licensed Games: Minor example: the first 3DS game, Cinderella Lesson, adapts the anime's setting very well, but the rhythm game part plays like Taiko Drum Master. This was fixed in the upcoming second 3DS game, Futari No Princess.