A possibility to install a wagn deck without file uploads would make it much easier to deploy it with Heroku. At the moment you need an additional cloud storage provider. If you go without the possibility to create new file and image cards it would be just one click to install a new deck.
step 1: script and style machine output as "coded" file cards in the seed data.
biggest issue : no custom css and js
step 2: save changed machine output in cards
biggest issue: no images
step 3: support creation of "web" image cards
+discussed in support tickets+relevant user stories