>>45733576I can't fit every move into the game, and some mons are more balanced than others. I use modern movesets as a first consideration, and then ask, 'How can I differentiate every species enough that every one of them would be exciting to play, without harming the balance overall?'
So yes, while technically Alakazam may get Nasty Plot as of Sword and Shield, I have to be more considerate about what my additions would do to the game. And, if I started adding moves with weak drawbacks like Close Combat and Flare Blitz, there's a real risk of making the game feel so unlike its roots that it alienates the very feeling I am trying to capture.
Here's an example of something unconventional--Igglybuff learns Growth at Level 18. Why? He's the balloon Pokemon.