These rings are the only ones left to implement and require a bit more thought on how to manage increased attack/defense given how complex managing damage to/from sprites can be in ALTTP. There is also the question of what happens when the player equips both of these rings. If the rings also reduce the opposite ability, they would cancel each other out. If they do not, they would compound and could introduce balancing issues.
These rings are the only ones left to implement and require a bit more thought on how to manage increased attack/defense given how complex managing damage to/from sprites can be in ALTTP. There is also the question of what happens when the player equips both of these rings. If the rings also reduce the opposite ability, they would cancel each other out. If they do not, they would compound and could introduce balancing issues.