It wouldn’t create any keyframes, the idea here is to:
1 Design the rig in the plug-in
2 Let the plug-in create the rig
3 Test the rig in the only way that will give you meaningful feedback, in Animator itself.
4 If it doesn’t work, delete the rig and go back into the plug-in where your rig-design is still there and make changes without having to start from scratch.
And yes, you’re right Brian. There is plenty of stuff lacking in this mock-up. The problem is that rigs are much more than just bones. If anything, the bones are the easiest bit. It’s when you start using all sorts of constraints, linking, XP scripts, complex IK set-ups that you find yourself working blindly without knowing if it’ll work. And that’s what this sort of plug-in should do, make the process more visual, transparent and non-linear.
An essential part of many rigs is nulls. Often multiple nulls on the same location. This interface doesn’t accommodate for that. You’ll need a tree-view for that.