Just a suggestion. When using the iv changer in the secret base, make it so that we can change the iv instead of it being maxed to 31. This makes it easier for gyro ball and hidden ability users who need 30 iv or 0 iv to their stat. Just a thought.
That would make the IV stone wayyy too op. Like, changing the IV to 31 is already pretty good, being able to set it as anything would be a little too much.