Detail preserving upscale in only one axis

Feature request: 

Allow us to provide an x-scale and y-scale parameter to detail preserving upscale so we use it to make cleaner renders from line-skipped 4k content that many modern 8k cameras provide.

Why is this valuable to me?

Downscaling line-skipped 4k footage by 50% and then performing a detail preserving upscale back to 4k yield a much sharper result than the source footage. I am assuming that this is because line skipping reduces detail and increases aliasing only in the vertical axis but details are preserved in the horizontal axis, so by downscaling than upscaling it re-interpolates and sharpens those details that were missing.

Unfortunately, detail preserving upscale does not allow you to only scale in one axis, so  we must also uneccessarily crush the details in the horizontal axis along with the vertical axis in the pre-composition before applying the detail preserving upscale effect.