Toughts about the campaign editor's online sharing functionality

So i've read and pondered on this, but i thought i'd ask the devs for a clearer answer, if such exists at this stage.

Would the online sharing portion of the campaign editor be to upload to something like steam workshop or a Chucklefish provided service? or would the community have to come up together to make a database of campaigns / maps? or a hybrid where you have the choice of how you export?

 

If theres online sharing, is it multi-platform? You upload it on a PC and can download it on your Switch?
If it's possible to export unfinished campaigns, would it be possible to save it on a MicroSD, put it in a console and continue building the campaign there?