Hey @markrekveld,
It wasn’t included in the original RFC, but it did come up in the comments and in many discussions with developers since.
So we have been working on Forge Functions to Remotes, and we’re just working on the final testing, docs, etc. It should be going out to Preview in the next couple of weeks.
There will be a new invokeRemote function added to @forge/api that you’ll be able to use from any backend function much like you can from the UI currently.