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.
YMMV: Soul Eater Not!
Broken Base: Asking fans of the original Soul Eater "What do you think of NOT?" tends to bring out different reactions. Some love it just as much as Soul Eater, some find it okay but nowhere near as good or entertaining, while others completely ignore its existence.
The way the anime is designed has received mixed responses. Some fans are a accepting of the new style, or at least willing to tolerate it for the sake of the show, because it reflects how different NOT is. Other fans are disappointed that it doesn't have that unique cartoon feel that the original Soul Eater had, and instead looks like another anime about Moe, something which the first anime was nearly void of.
Is the new style justified because NOT is a slice of life and so it is supposed to look normal? Or did it not have to be moe at all and it's just a poor excuse to cash into the market?
The designs of the original Soul Eater cast. Good god did the fandom nearly tear themselves apart after they were revealed. One faction of the argument is fully against the designs, claiming that it lacks the charm that the original Soul Eater had and so they not only look different, but they also don't feel like the same characters. The other faction has completely embraced the new designs, pointing out that it was inevitable because of the new design, and that because NOT is a slice of life it is justified. Both factions agree, though, that they still prefer the original design of Soul Eater overall.
Tsubaki's new design was the biggest base breaker out of the original cast. While many have pointed out that her design matches what she looked like in the prequel chapters, others have also pointed out minor unneeded changes such as her bust size becoming bigger. This has lead to minor fights as to whether or not her new appearance is justified.
Meme's extreme forgetfulness has rubbed a few people the wrong way, finding her actions more worrisome than funny. Her forgetting how she tied her hair or the date of a test is fine and quirky. But her forgetting nearly everything she did the day before, and even her own name on a daily basis is not just uncomfortable but also alarming when you think about individuals in reality who actually suffer from such problems due to various conditions.
Then again, this may have been intentional. The anime starts to play her memory loss for drama right around the time that Meme is revealed as The Mole, and it's implied to be a side effect of Shaula's mind control. Of course, that would make her entire character up to that point a "Funny Aneurysm" Moment at best.
Kim's cuteness levels absolutely skyrocketed in this series as compared to how she is in the later half of Soul Eater. Which is saying a lot.
They Changed It, Now It Sucks: Few have taken well to the redesigns of Soul Eater characters in the anime. The main reason being that the characters look nothing like they did in the first anime due to the drastic style change. Examples include the female characters having this blush on their cheeks that is always present (Something that wasn't in the original Soul Eater anime.) Another common complaint is that the characters look either too young or too old than they should actually look in NOT when compared to Soul Eater. For example. Black☆Star is supposed to be around 12-13 in NOT, but his new design in the anime makes him much taller and older-looking.
The Scrappy: A faction of the fanbase has made it clear that Meme is not only the least liked of the main girls, she's also one of the least liked of NOT's cast, in general. Primarily because out of the three girls she has received the least development and has done very little to prove she is a good meister for Tsugumi despite being a candidate. Others simply abhor her for her character traits being a bad joke, and some even going as far to declare Dude, Not Funny!.
They Wasted a Perfectly Good Character: Shaula is just a truckload of wasted potential. There was so much that could have been done with her, as the third Gorgon sister, but she is barely developed at all, her motivations aren't explored, and her relationship with her sisters (or anything about their shared background) isn't shown at all. Before the final episode, some fans were speculating that Medusa would be the one to kill her, and were hoping for at least one scene with the two of them together. Nope - she's defeated embarrassingly quickly and easily by Tsugumi, Anya, and Meme, three NOT students who have fought a handful of times in their lives. So much for "most superior of the Gorgons."
They Wasted a Perfectly Good Plot: In Chapter 15 Shaula used her magic to take control of Eternal Feather to cause chaos in a flea market and then she forced her to commit suicide by letting her slash her own throat. At this point, a lot of folks expected Soul Eater NOT to take a serious turn and those who haven't read past this chapter like to point this moment out as one of the reasons why NOT is just as dark as Soul Eater. Unfortunately, this entire incident is easily solved and forgotten a chapter or so later and the story doesn't change in either direction or tone. Eternal Feather survived her injury thanks to Dr. Stein and Shaula hasn't been seen since. None of the characters talk about or think back to this incident, and it isn't until Chapter 29 that it is mentioned again, albeit for a joke rather then for anything plot relevant.
Uncanny Valley: Most of the background characters in the anime are drawn in a way that lands them straight into this territory.
There are several moments of Off Model in every episode, which leads to the characters having either unusual anatomy, awkward faces, or both.