Ashley Thank you for the explanation :)
Elliott I would support the crowdfunding about making a plugin for the spine, dragonbones, flare or any other animation tool that has mesh feature.
I was also hoping for Spine plugin (mesh deformation feature). But have You checked out Spriter 2?
It's going to have mesh deformation:
youtube.com/watch
youtube.com/watch
Looks pretty good to me. Add to this the fact that Brashmonkey is already planning to support Spriter 2 for Construct 3. So why not support these guys instead?
I don't personally feel the need for Spine plugin anymore.
Edit; I would be interested to support a plugin for Spine too though. It's always better to have two animation tools than just one to rely on.