Context-based texture export

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It would be awesome to be able to work on specific textures. To be more detailed an example: I am in the Face section, I am working on eyes, rightclick on an eye texture in the selector, get a context menu that allows me to export this eye texture. I can then work on that eye texture in an image editor. Then again rightclick in Reblium to import the reworked (or completely new) texture. This could also be done for other options like freckles, moles or makeup. From what I learned to far it is possible to export an avatar as fbx, do changes to the textures and then reimport, but it would be easier and a better workflow imho when it would be possible to do this as described above.