I don't know how to explain myself now, but these tools are already in Maya. and in MotionBuilder.
In the Daz interface, they are very "fuzzy" on the face- (They are not clear, in red on ... on what ???!)
It is not easy to use, as much as in Maya.
But, it's my opinion ...
It is a great step forward to make animations in Daz, (which has always been ignored ...)
And there are the smart people to do things that not even Daz programmers think ...
Ah! But we have that thing called "Filament", which is Open Source: Daz appropriates the code and that's it, to take Opem source in the ass.
Elegance Vs. Money.