As my father is still in the ICU, I won’t be giving too much input.
The reason that I ask is because there are many approaches to sharpening, de-blurring, and contrast or edge enhancement. I would say that the ones used or suggested so far are good enough for general purpose sharpening. If they work for you, then great. However, if you have a specific set of criteria as to what constitutes good sharpening, do share.
It might help to provide examples of sharp frames taken by yourself or someone else, and annotated examples of where post-processing sharpening is ineffective.
You flatter me. 
I tend to make my own newbie filters for personal use. They aren’t ready for release. 
Ask folks such as @garagecoder @iarga @Iain for direction.
In general, I find myself using these two the most often (the type, not actual filters).
a Similar to ImageMagick’s Laplacian Of Gaussians (LoG, Convolution of Images -- ImageMagick Examples). I don’t know how it compares to RT’s edge and micro-contrast methods.
b Detail layer obtained by the guided filter (or any other robust edge-aware smoothing filter).