Integrating some of the Let's Go mechanics into PRO would definitely be an interesting shift, especially with how it would change the catching and leveling grind. It’s always a bit of a balancing act trying to keep the classic feel while making things more streamlined.
If you’re trying to map out how those specific stat changes or catch rates would actually look compared to the current meta, I've used https://thetoolapp.com/bubble/ to keep track of different data points and notes for stuff like this. It’s pretty helpful for organizing those kinds of "what if" scenarios.
Either way, it’s a cool suggestion and would definitely make the early game feel fresh!