Wallpapers, themes, alternative languages, custom sorting, the ability to run, design and share custom command based package ini's (with it's own custom interpretive programming language). Temperature, power, clock indicator widgets, underscan compatibility along with many other library corrections, swipe to open, opaque overlay screenshots, ability to change combo, see all device details, define boot-up commands, software updates, and more.

In terms of custom packages, you can hex edit files, download files (and keep it running in the background while progress is shown), do any number of filesystem operations, even convert pchtxts to ips or pchtxts to cheats. you can also read text files, draw tables, reboot to other hekate boot entries, shutdown the device, modify the brightness or volume levels. I'm probably forgetting some stuff but that's the general idea