>>40956408>Which Pokemon would realistically face a great deal of regulation? Requiring special permits and such granted only through connections and/or demonstration of appropriate skills, knowledge, and resources?I don't know about regulation but as far as difficulty goes, I think the Ralts line would be tough to raise primarily for the commitment it requires. Many Pokemon are only about as tough to raise as a normal animal, or even easier since they can understand speech. Ralts line though is less like a smart pet and more like adopting a particularly emotional person with superpowers. You're committing to making them an important part of your life. And since they bond with their trainers so strongly, a trainer who isn't just as committed to the relationship will hurt them. Raising them isn't just about feeding them and playing with them, but also about being open to their feelings.
On top of that, with all Psychic types there would be the difficulty of adapting to a whole new form of expression. Other Pokemon you can just talk to, but Psychic types can also read your mind or emotions. It can be really difficult to open yourself up in that way, and I suspect many trainers would be unwilling to do so. Plus you'd have to deal with a lot of regulations about them too, like keeping them away from certain places so they won't accidentally steal government secrets.
Besides Psychics, I think Ghosts would also be on the tougher side to raise. They're very different from normal Pokemon, with strange biologies that you've got to learn and dangerous abilities (like Frillish being prone to drowning people.) Many of them have some kind of trauma attached that leads them to misbehave - Banette are bitter over children, Drifloon may or may not want to drag kids to hell, Yamask might be dead humans. Ghost type trainers would have to be on their guard and better at diffusing problematic situations than most.