You can't fool me with that /s. I know how you really feel.
There are Pokémon that have changeable forms though, such as Oricorio, Deyoxis, Morpeko, Rotom, Kyruem, Necrosma, and so on, so it's not something unprecedented. It's just that Lycanroc and Urshifu can't form change. But since the forms are still the main thing the Pokémon have going on it'd be a waste not to include them in some way. It doesn't have to be a form switch (perhaps a similar gimmick is achieved with just multiple instances of the same Pokémon), but I don't think anyone would care if it was.
Also, I don't think Cutie Gwen was saying she disliked the idea, just that she didn't think The Pokémon Company would allow it.