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.
Badass Decay: Probably some of the fastest decay in the history of literature. Most of Merry's harem are supposed to be eons old warrior gods and some of them even had pretty cool introduction scenes. In the first book, Doyle shows up and goes One-Man Army on a bunch of slaugh and then has a duel with Sholto. Frost started off as a Knife Nut who had the balls to defy the crazy, torture-happy queen by not wearing the crappy clothes she told him to wear. Then they had sex with Merry and turned into whiny emo boy toys. Fuck.
Just for an example of how bad this is, at least one of her harem of badass warrior gods occasionally bustles around the house wearing an apron and offering cookies.
Broken Base: Averted. Laurell K. Hamilton never made any pretensions that the series was not meant to be erotica first and foremost.
God-Mode Sue: Merry Gentry is the living vessel for the Fairy Mother Goddess.
Ho Yay: Surprisingly averted. There's little guy love between the Ravens.
And not-so-averted as of the end of Swallowing Darkness and Divine Misdemeanors: Doyle loves Frost so much that he's willing to give up the kingship to bring him back to life. After he does so, it's acknowledged that they love each other just as much as they love Merry. Still no guy-on-guy sex, though.
Moral Event Horizon: Taranis gets one of these when he tries to rape his own niece. Or possibly before the events of the first novel, when Taranis realized he was infertile, and condemned his court to die out with him. After slow genocide on your own people what's a little incestuous rape among family members?