Does your slider include short, and should I not bother to work on it, then? Don't want to spend the time if you've got it covered.
Yes, my slider can make sims shorter.
I attached an unfinished version if you or somebody else wants to test it.
The only remaining issue so far is that I forgot to adjust some skirt bone, so female skirts and dresses may get some small deformation when changing the leg length. And of course there are the unavoidable issues with clipping, bedframes and the kissing animation.