I'm doing a bunch of experiments on animation techniques and spine has been a bliss for this!
In one of those experiments I made my character out of curves in spine. I then created a rig for the curves and
animated the curves. Everything worked really well and was working perfectly.
But, there is no way of rendering or exporting the curves into a GIF or anything else.
It would be nice if this will be there at some point (ability to render them).
Oh and there is also no animation ghosting for curves!
Here's what I made with it (Made a GIF by print screening every frame)

This is the Rig if anyone is interested:

I think some nice things could be achieved with this.
Even just sketching out an animation digitally ๐ Made this in just an evening so it goes pretty quick this way.
Skinning curves is also a lot easier and faster than skinning a mesh ๐
Would also be nice to fill up the curves at some point.
I know it's pretty out there and not how spine is intended to be used ๐