The original princess is comically and unnecessarily cruel. Our isekai takeover princess wants to avoid being that no problem I love it. After all It's not a high bar to NOT be "comically and unnecessarily cruel" such as NOT getting Stayle's mom killed for no reason just to torment a 5yo. And sure enough now everyone loves her. The criticism lies with her behavior now is just another typical "good princess" you find in any other story, her whole backstory of being a cruel princess prior to takeover is hardly relevant. This manga could've just started with Pryde being righteous from the get go and we're along for the ride to see the future kingdom in good hands.
I'm saying If you're going to utilize the isekai takeover plot device the main guy has to be much more genre aware than everyone else, and behave almost as if they're reader of the manga. "Look kids, you're looking at the future queen of this kingdom, your friend Val answers to me now, like the two standing behind me. I know they look strong af, and they are! So we're getting out of here now that we found you, we're going to have to regroup with Val and rest assured as your queen, human trafficking in my kingdom will be dealt with if not by me personally.