I love the concept of Bowsette - not because I actually like it, but rather because it's rather poorly thought out and as such super easy to subvert and turn into the most off-putting, unsexual thing ever.
What happens if you wear multiple Super Crowns? Would forcing someone to wear a Super Crown against their will count as sexual assault? If a non-sapient being put on a Super Crown would they just end up being an animal in a human body, or even left in perpetual torment over their newfound sapience like that one Animorphs book with the ant? Are there Super Crown equivalents for less visually appealing characters like Wario or Madame Brood? What if an ugly Mario species like the Lunge Fish were to wear it? What if Peach herself wore it? Could overuse of the Super Crown lead to nigh-incurable body dysmorphia?
My one hope is that they don't have a flashback scene where it shows Tom and Jerry as babies for monetary gain on plushies and other kiddy merchandise. I don't want it to happen, but for some reason I just know it will.