The following couple of options are available via a discrete, XNXX-themed sidebar that expands on hover at the bottom right of the site once installed.
Automatic cinema mode
Option to autoplay videos
Some improvements are done behind the scenes:
Some elements of the site are automatically hidden for being either useless or annoying
It's not much as of now, but hopefully one day it will be.
Disclaimer: The features of the Plus-scripts are developed for my own use. They add a few personal conveniences and remove some of my annoyances, all of which may offer little value to others. So feel free to fork them and make them more in line with your own use cases.