Heya @marcus ! I was reading through an older post regarding Bind Poses since it would come in handy for a current situation I’m in. After some digging, I ran into Docs about nCloth Rest Positions and nHair Initial States.
Since RD works with built-in Maya forces, I was wondering if similar tech could be used to create a “Rest Position” for our setups. Also, it’s been a few years since that original post, so I figured I’d ask if you and your team have tested any further 
Thank you!
Hey @isai!
The older post and what Autodesk refers to as rest positions are two different things. Ragdoll can already do what nCloth and nHair does, it’s the whole premise behind the pose on the first frame. That is your initial pose. It is set automatically in Ragdoll (that wasn’t always the case!) and is what artists would expect 99% of the time and hence looks simple and is taken for granted.
The older post on the other hand was about establishing a pose after forces - especially gravity - has been applied. It’s about taking your input pose, like a t-pose, and finding the equivalent pose, like the arms slightly tilted upwards, that would cause the simulation to end up at your input pose once you press play.
It’s pretty math-heavy but not uncommon in other applications like robotics and is called “feed-forward gravity compensation” or just “anti-gravity”.
We haven’t looked closer into this since then, since everything we’ve wanted to achieve and everything we know users want to achieve so far has not benefited from it.
That said, if you can share more about your usecase, I’d love to look closer into it.