Hello!
So there are added scenes with the mod, either with my own renders or a few with fan-art from the fan-art thread.
There is also a lot of added content such as alternate versions for Love and Corruption scenes where they have been turned into the other version of that scene, such as a Love scene into Corruption and vice versa. As well as the Darker Paths for NTR scenes. There is more of course, which can be found in the change logs and features sections on the OP for this thread. (This mod has evolved a lot over the past 4 years).
And while many of the requirements to see the scenes in-game are the same as the original, which I do personally recommend playing through at least once before trying the mod, there is a guide for the mod content as well in the help menu on the MC's phone. (It in the bottom right hand corner, the red box icon titled "What's in the box?!")
Anyway, I hope that helps answer your questions a little bit and that you find something to enjoy in the mod, if you try it.