Hi all,
I would really like to see the GeneratedField() on ID has accessor like related fields from what it is generated.
I think that the final implementation should be an output_field= and also the limitation of the F() function on Related fields could take benefit from it, by giving lookup abilities on the related attribute.
I have already started my proposal in pre-existent appropriate ticket
https://code.djangoproject.com/ticket/35269#comment:2
and I have done a first implementation, that now requires 2 fields in my github repo (referenced in the ticket too).
Do I gather consensus on this new feature here guys, or not? 
Thanks to all Django Developers for your precious work!
fero
P.S: I have had also some contacts in #django IRC channel on libera.chat