I'll pitch in and say I hope these rumors aren't entirely true. It could be interesting to have Pokemon Go catch mechanics -- IF they are combined with existing mechanics. In that, you still battle the Pokemon and weaken it, etc., but then when you throw the Pokeball, it transitions to a Pokemon Go style. You could further increase your chances at catching the Pokemon, though there'd have to be some way to account for missing (particularly with a Master Ball...). It would be an interesting way to implement the Switch's touch screen.
If Pokemon Go catching mechanics entirely replace the battling system, I will be sorely disappointed.