The only problem I have here, is that if you don't want to go to the Nexus (because NSFW), you have no idea that the textures are 4k. No where in the guide does it mention this. I chose performance settings for most mods, and avoid anything 4K (and generally try to remain at the 1k level). So to say it is up to me to decide if I need to DDSopt them for the extra VRAM is unfair as I wouldn't know I need this one specifically DDSopted. Not an issue if I decide to just DDSopt everything I suppose, as blanket DDSopting things means I don't need to know the original sizes. Regardless, please list in the guide that the textures are 4k so users will be aware.
Unfair? There are several ways to find out the size of the texture besides going to the nexus page (which doesn't even say the size of the textures anyway so your concern is a bit misplaced in that regard). We're not going to list the size of all the texture in all the mods on the Guide. Users have to be somewhat self sufficient in some areas. Try using one of the following tools...both of which will do as you need:
Windows Texture Viewer by Nvidia: https://www.nvidia.c...ure_viewer.html
Skyrim DDS Image Viewer by Sir Garnon: https://www.nexusmod...im/mods/30745/?
It should be noted that 4K is the norm for bodies. Even vanilla body textures are 4K and users have to be careful when reducing them as they will get missed up easily if the right settings aren't used in DDSopt.