Well, basically, make it so you can give a list of numbers for See Invisible, has been proposed many times, and said it could be done using image() however with about a billion items, and with loads of people, it's really hard to manage, and it would spawn a lot of new things using it, simply because it would not look very intimidating compared to using image().

Even if you don't change how invisibility works or see invisible does now, a new list could maybe be used that will be like an also include these invisibility numbers, even if u don't get rid of the old way, to keep old games working.