Blender isn't a platform we have targeted, sorry again. While it can be used to build assets for games, it's not a game toolkit which is what most of our runtimes target. It should be possible to use our Spine Runtimes to write a plugin that brings Spine animations into Blender, but we don't have plans to implement that in the short term. What you could do instead is to export to PNG sequences and bring those into Blender. It may be easier to use a video format that supports transparency, like MOV with the PNG codec, so your animation is contained in one file. Many people do this to bring Spine animations into After Effects for further processing, camera effects, etc. There are a number of cartoon series that do this, like this one for example.
