Allow for up/down arrows to step up/down the time element with the keyboard cursor. For example, if I have my keyboard cursor on the hours of a time, then pressing up would increase the hour by 1.

Keyboard support for the dropdown... Space to open, tab and/or arrows to cycle through and change the date/time.

The TimePicker control uses TimeSpan values for all time properties like Time, DefaultHighlightedTime, MinimumTime, MaximumTime, etc.

With .NET 6 a new TimeOnly type was introduced. It would be great if the Time(Only)Picker would support it as well.

For now, I created a custom TimeOnlyToTimeSpan Converter and use it to bind the TimeOnly properties from the ViewModel. But native support would be great.