I would suggest taking a look at https://nuclide.io/docs/features/remote/ for imo, best in class for what you're talking about. Most editing at Facebook is done on a remote server, so the infrastructure people at FB have done a pretty good job on shoring up a lot of the issues.

It has a lot of what you're talking about. Typing `atom foo.conf` to open up files locally. Keeping the same connection open and reconnecting without needing to reauthenticate with SSH.

There's also a lot of other stuff that needs to be handled. File searching needs to be hooked up a reasonable way. Language services do as well.

Facebook has done a great job with remote editing (although I don't think the open source version of Nuclide is a priority).