Add controls to selecting dates/times that also support null or blank values. Currently the DatePicker control that is provided as part of Xamarin Forms doesn't allow for a null or blank date. Provide the ability to select date and time in single UI.
Add public-facing methods to re-call DataSourceProvider GetSourceFor methods. This would allow for refreshing the datasource. Alternatively, add support for ObservableCollection to be used for DataSources so that the pickers reflect any changes to the underlying data source.
Provide an Auto option for the SuggestionViewHeight that would dynamically change depending on the content.