I've been evaluating my options for an animation tool, and Spine is inching its way to the top, both for impression of quality and price. The first is nice but the latter not, so I'd like to make sure I can make it work in my tool chain. Everything else is well documented except export options and formats, and that is also not available in the trial version.

The kinds of questions that are not answered:

When exporting as PNG, are all animations exported as individual frame images? How are they named, can I customize the naming?
Are all animations for a sprite rendered using a common crop rectangle or does it vary by animation? Does it vary by frame? Can I configure this?
Are batch exports handled properly when animations are updated? If I make an animation shorter and re-export, are the frame images for the previously existing extra frames removed, or is there an option to delete old assets beforehand? If animations were to share crop rectangles and I only export one particular updated animation, is it sure to have the same settings as the previous batch export that exported them all?
When exporting PNG files, is there any way to tell where in the resulting images the root bone of the sprite is? Does exporting PNGs in general create auxiliary data in JSON form or otherwise that lets me know where the origin and/or crop rectangle is? If animations render at different image sizes, how can I tell where their shared origin is?
When exporting as JSON, how are the needed image assets exported. The screen shot in the manual doesn't even have an option for specifying image format, I assume it's PNG by default?
If I export as PNG, how do I get access to events?
Is there a way to customise the exported data files so that they would fit the engine's requirements better?

My primary use case at the moment uses XCode for atlas creation so anything else is just in my way and I do not intend to use runtimes (i.e. I need fully baked animation frame images) for this project.

This is probably just a scratch, but you probably get what I mean. I'd love to think I found the tool for the job, but the last step is the most important so any help here would be well appreciated.