My settings mods (TAA, FXAA, Aggressive Render Scale) are designed to be modular. You can install any number of them and enable them however you see fit.
For other modders: this is possible because I am overriding Inputs.gd multiple times to access Settings, which 1) does not use class_name and 2) has the virtual methods I need, in this case _ready
Simple mod that adds TAA antialising to the Settings menu.
Godot TAA doesn't really look good on my machine, as it tends to make the image a bit fuzzy and things feel a little laggy. But your results may vary.