To me it's not about being "conformist", far from it.
I have tried to find parts that are a little rarer than the usual Nismo stuff, but at the same time try to make the car flow visually.
Nothing wrong with a bold spoiler, but I think the MG spoiler just looks too square for are car that has flowing curvy lines, it just looks out of place.
It cool to have a friendly body shop so you can try things, wish I had that kind of option.
Sometimes mods are just hit and miss.