From someone who plays on a number of high resolution screens, this is a pretty irritating issue. When this is worked on eventually, please note that 4K @ 28 inches is actually still pretty low DPI compared to many of the screens out there such as 2880x1800@15 inch, 3840x2160@24 inch, 5120x2880@27 inch. Just making things a little bit bigger isn't quite enough. The full 2x scaling is needed. An arbitrary scale factor would be even better.