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.
Dairine gets less Sueish after she has to deal with no longer having enough power to do anything she wants and not knowing enough to make up for that, especially since that happens when her mother is dying of cancer.
Crowning Moment of Awesome: Several in every book. Notable examples include Nita and Kit reading out of the Book of Night with Moon AND making all the statues in NYC come to life and Fred's sacrifice. In DW it's the battle of the krakens and, y'know, everything during the reenactment in the underwater canyon. HW is one big CMOA, thanks to Dairine (who, facing the Lone Power, casts a spell that stops the expansion of the universe). A Wizard's Dilemma contains Nita's mother, who suddenly doubles her awesomeness quotient and tells off the Lone Power.
And Fred when the kids read from the Book of Night with Moon.
Deep Wizardry. Ed's sacrifice.
Wizards At War... several times. Memeki's, and Ponch's ascension to a higher plane of existence . AND Roshaun's death disappearance.. Jeez, Wizards At War is probably one of the most emotional books in the series to date. Right up there with A Wizard's Dilemma.
Unfortunate Implications: Darryl's autism is portrayed . . . less than sensitively. To put it in perspective, Kit's mom's reaction to hearing he's autistic is basically "oh, that's awful". The whole book treats it like a big tragedy and if that wasn't bad enough he actually cures himself of his autism by splitting his autistic self away and leaving it behind in the universe he created with the Lone Power. What. The. Fuck.