Tons of Customization
Customization is something that the GBA-era Pokemon games didn’t have, once again, presumably due to the limitations of the hardware at the time. Coromon allows players to change different articles of clothing as well as the look of their actual character sprite.
There are options to change hair, headwear, outfits, accessories, skin color, facial hair, and more. There are even new outfits and accessories that can be obtained throughout the game to add to your collection. All of these options can be changed after starting the game, which is convenient.
The customization isn’t purely visual either. Your Coromon’s learned moves can be swapped in and out at any time whenever you’re not in battle. This means that any moves they learn actually stick with them forever, even though you can only set four at a time to be used in battle.