I don't really see the need for this. A unified interface could be nice, but this will also limit the scope that background processors will operate in. Besides

I don't really see the need for this. A unified interface could be nice, but this will also limit the scope that background processors will operate in. Besides that the amount of rails projects that need background jobs aren't that large of a percentage comparatively. I'd rather see some more interesting things going into core, such as https://github.com/kickstarter/rack-attack https://github.com/kickstarter/rack-attack, that should be used by nearly every app.