a very useful function would be to have the option to export each visible layer seperatly as a PNG (or whatever you choose) This because sometimes you need many different layers to then assemble again in another program at the highest possible quality. just a checkmark would suffice I think,but maybe there are extra needs
Yes please, and treat group layers as a single render pass.
This should be easy to do with a python plugin, I will attempt to make some time for it next week.
Exactly what I've been awaiting scripting for! :) I will probably not have time in the near future though so if you want to give it a go I would be very happy. There is a good Gimp-plugin that does this, https://github.com/khalim19/gimp-plugin-export-layers
This is now possible with the python plugin for exporting layers separatedly closing.