You may be tracking on this, I know accessory mods are new/in development, but two of the three mods are "add tag" and "remove tag". It might just be too subtle for me, but I can't tell what they're doing. I tried miniaturize on an accessory with a tag, but it stayed around. The add tag mod didn't add any tags. Both are eligible for boosting up to higher levels, but the costs don't scale and I didn't notice any changes while leveling them up.

