I, too, want a better and more expansive Export setting.
Was Adobe serious when they released the new cloud version of Adobe Lightroom with no ability to export a standard printable format like TIF?
Many professional photo labs these days will not touch any file format that is not TIF
How far off into the future is this feature?
They haven't announced their future roadmap, so I can't give you a timescale.
To be honest, I think the marketing team were somewhat overzealous calling it an app for professionals. I'm sure it will be in time, but it's more focused on an amateur market right now.