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: Futari wa Pretty Cure Splash☆Star
Base Breaker: While not as much today, back when this series was first aired, it got quite a bit of backlash at first, due to the lowered hand-to-hand combat elements compared to the previous seasons and feeling like too much of a retraux of the original. Nowadays, the series is seen with much more respect and is overall much more enjoyed, and it's given its due for introducing the now standard Dark Magical Girl joining the heroines' side. The darker plot and the flight mechanics to mix the elements it introduced with some new hand-to-hand fights near the series end may have something to do with it as well. The series still has some detractors, though not as much or as volatile about it as it used to.
Complete Monster: Gohyaan initially just seems to be Akudaikahn's sly right-hand man whom his other minions pick on. He starts to show his true colors when he takes Michiru and Kaoru back to Dark Fall while they're making their Heel-Face Turn, where they're seemingly killed. Then he crosses the line when he captures and tortures Flappy and Choppy for information. When the Pretty Cure defeat Akudaikahn, Gohyaan kills him and reveals he created Akudaikahn and Dark Fall to destroy Earth and the Land of Fountains. He then turns the Earth into a wasteland. Why does he do all this? Because he remembers the universe before it had any life and wants to return it to the silence it once was.
Les Yay: Saki and Mai (principally in the movie), and later these two with Kaoru and Michiru, combined with Incest Subtext.
The first ED had lots of holding-hands shots between Saki and Mai.
Memetic Molester: Or more precisely, Memetic Lolicon; in-series Saki's little sister Minori is the Morality Pet of Kaoru, whose protectiveness and affection then degraded into perverted jokes quickly in fanworks.
Out-of-Character Moment: Many think that the Non-Serial Movie is this, mostly from Saki. As the relationship between Saki and Mai is extremely stable and understanding since the beginning, Feud Episode is just out of character of them note There's an episode already where they have a misunderstanding, but they don't fight like in the movie, instead go for Twice Shy scenario. Not to mention Saki's dense Jerk Ass behavior doesn't endear anyone. Almost all of the fans will recommend to avoid the movie for this very reason.