If Apple wants to revive the tablet division, it could start taking those upscale creative types seriously: rethink the user interface, taking it beyond the simplistic design it's always had, and improve the wretched Apple keyboard.
Nevermind User Interface, a proper productivity machine needs a proper OS - macOS.
i5 with a full fat OS (with proper access to file system, etc), in a tablet-laptop package (or as Microsoft call it, the Surface Pro 4).
If Apple ripped off the Surface Pro 4 and made macOS work on it, there's a reasonable chance it would be my next laptop. Unfortunately that seems unlikely (they went with the two-OS strategy, so touch support in macOS is non-existent, as compared with MS who converged their mobile and desktop environments), and the new Macbook "Pros" have no wired I/O, which leaves one in a quandry... :(