P: JPEG Preview needs more options

Camera Raw & DNG Converter feature request: 

JPEG Preview needs more options. The current default medium size image resolution is too low, while the full size resolution exceeds the needs in most cases and causes large file sizes.

Is it possible to add two options:
1. "high size", approximately 1920x1080 pixel resolution, corresponding to 1080P displays.
2. "higher size", approximately 3840x2160 pixel resolution, corresponding to 4K displays.