The basic mod as presented in the OP works by turning off selected pixel shaders. It "gets rid of stuff" that many feel detract rather than add to the game. As such, it's pretty easy to implement.Any chance of some hints as to where to start if one was going to tinker a bit?
What I've been doing recently is actually replacing certain pixel shaders with my own shaders. Like Reshade, this does not modify any of ED's game files, but rather injects the replacement shader upstream of ED. This is way more "tricky", and in some cases, highly customized to my own very specific preferences. A person who understands shader programming could customize these files to make their own HUD colors or tweak the skybox to their liking, but I suspect that's a small subset of the population. Many people can't even edit a simple config file, let alone a pixel shader. And no, I don't have time to write an app for this.
Anyway, once I finalize the changes I've been working on myself, I'll upload the shader code along with the new d3dx.ini in case anyone wants to play with it or just use it as-is. I'm still tweaking and experimenting and learning right now.