Features
Gen 8 Pokemon will be available from the start
The Antisis Ring challenge can be accessed by going south of the Frontier and talking to the clerk
The Costume Box and God Stat Scanner will be given at the start of the game (talk to nurse in the Tower for existing saves)
The Bottle Cap lady, Hidden Power changer, EV Trainer will never appear (use the Stat Scanner)
The Berry seller, Move Deleter, and Ball Changer will always be out
Frontier Raid drops have much more useful Berries and a higher chance of Wishing Pieces
Most Pokemon can be purchased by name from the lowest Battle Tower vendor (add suffix -A, -G, or -H for regional forms).