It’s not that we have chosen to not include it. It is mainly because we don’t have time to implement it right now. But also, if it is to be implemented back, it will be a single toggle switch without any tweaking.
It has some annoying aspect that it disregards the shadow visibility of the object. Which is confusing sometime.
Also there is the issue of implementing it in an efficient manner without making everything slower.
The manual still needs to be written, that’s one of my top priority now.