Lots of things, one of them being when paired with AV2HDR allows you to upload non native video. Example HD Video from my camcorder.
Non Exhaustive list in no particular order
Add non freesat channels to freesat mode and set manual recording timers
Remotely access your box using the internet
Remote Control using a PC, Tablet Smartphone etc. This has favourite channel selection icons and recordeable button macros.
For instance programme the sequence schedule/red to get an instant guide.
Customisable epg views, the way favourites ought to work on the box itself
Search the epg using a proper keyboard
Stream the time shift buffer file a few seconds behind real time to a suitable device (eg laptop).