Hi Sami,
We have A300-600RF / A320F / A321 F and A332F up and flying around, only 1 FAM member is missing "A310-300F" (or perhaps together with A310-200F conversion).
This would triggers a more variety in the Freighter variant for market and give LIFE back to A300/310s.
https://www.elbeflugzeugwerke.com/fileadmin/pdfs/Brochure_EADS-EFW-A300-A310-Conversions.pdf