[delta_p_delta_x]

> Subpixel antialiasing is going to be problematic anyway on newer displays that don't necessarily feature a plain RGBRGB (or similar) subpixel arrangement.

This will then mean making the subpixel anti-aliasing algorithm aware of different subpixel layouts. And this ought to be done anyway, because most anti-aliasing is usually at least somewhat hardware-aware. In my opinion, regardless of how subpixels are laid out, more resolution is always better.