Animatica Marionette
The drag mechanic is what hooks me. Rigging in Blender has always been a fiddly, joint-by-joint grind, and anything that turns that into a grab-and-pull motion is attacking the right pain point. Pose a character by moving its hands and feet and the software figures out the elbows and knees for you. That's the kind of shortcut that gets a hobbyist from zero to a decent walk cycle in an afternoon.
I'd want to know how well it handles the gnarly edge cases. Inverse kinematics is easy when the limbs are simple, but things like spine bends, finger posing, or feet planted on uneven ground tend to break these tools. If it survives contact with a real production rig, it earns its keep.
Still, the timing feels right. Blender's animation community keeps pushing tools like this into the mainstream, and anything that lowers the barrier for solo creators is a win in my book. I'm curious whether the developer turns this into a paid add-on or keeps it open, because that will decide how fast it spreads.