Even with the single screenshot, it looks pretty good to me. You should reach out to some of the park makers for insight on getting the players positioned back in the park (not sure if they are running through walls even if positioned correctly - advice on that is beyond me). The dimensions don't matter other than the PbP on HR distance and the like. The factors drive the player performance. Will be curious how it plays and if you'll need to dial some of that back through testing.
All that said, I want to reiterate my main point - it looks great
