Generally, the only sweeping texture mods I know of are either for one planet at a time, or performing a full AI upscale on the existing textures of the game. There's no one singular mod to do the same replacement extent as ILM did.
ILM is generally disliked because it replaced textures with no regard to keeping the same visual quality of the game. They often were the wrong texel density, which could cause sparkling or stretching. Major retextures, as I said before, are often left to AI upscaling, which has very mixed results. Often, the textures get oversharpened to the point of hideousness.
Revamping the game's art is a great challenge. It's easy to make the game worse. I'm under the philosophy that the textures, even in their low quality state, are fine so long as the lighting, shaders, and models don't muck it up.
For now, with ReShade, you're probably going to get better results visually than ILM could provide, but that is my personal opinion. ILM was ambitious, but it was akin to taking a sledgehammer to pound a nail in the wall for a painting.