As the script is presently written, there are two lines of code script users have to alter in order to change the desired URL parameters. One line detects whether the desired URL Parameters are already present in the video link, while the other appends the URL parameters if they are absent.
The Privacy Redirector script which I recommend use alongside this script features different toggles in the code to enable and disable not just individual redirects, but whether those redirects pull destinations from a Farside instance or from a pool of editable URLs maintained by the script user.
At minimum, if anyone is capable of adding such a feature to this script without breaking it, it would be desirable for there to be a single pool of editable URL parameters that can then be applied to both the detect line and the append line so that users do not have to manually edit both lines of code for themselves.
More complicated would be to recreate the toggles from the Privacy Redirector script so that users can merely toggle on/off desired URL parameters and have them applied to the detect and append lines of the code.
Should the latter-most option be plausible, It may further be of use for users to fall back on a "single URL parameter pool" should the options of default toggles prove undesirable for whatever reason, most likely being reasons beyond this repository's scope such as the addition of new URL parameters to the Invidious project or the deprecation of pre-existing URL parameters.