In Xamarin Forms there is a serious need for a Rich Text Editor control that would allow you to do this such as highlight text, apply fonts, styles etc. I think a tool like this is in great demand among Xamarin developers. Currently there are some Open source controls that have implemented these features however they have not been maintained and cannot be relied on for enterprise solutions
On UWP and Android the item can be swiped beyond the SwipeOffset property. Add option to restrict the swiped distance to the SwipeOffset value.
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.
A GridView control will be a great addition to the suite. It should offer: - Multiple columns - Sorting - Filtering - Grouping - Conditional Formatting - User interactions Available in the R3 2017 release. More information you can find here: http://docs.telerik.com/devtools/xamarin/controls/datagrid/getting-started/getting-started
Null value support for Chart for Xamarin Forms, so that if there is a null value, a line chart should appear "disconnected" at the point where the nulls are. Available in the R3 2018 SP release.
With the current implementation of the control, if you have events later in the day - the user needs to scroll down so that they are shown. We can consider adding a mechanism to show the first available event or expose methods to bring a specific event into view.
The text can be used to show why the application is busy. Available in the R2 2018 release.
Allow customers to easily take the user input and trigger custom searching algorithm and assign the results to the ItemSource of the AutoComplete. Available in R3 2018 release as part of the feature-set of the new and improved RadAutoCompleteView control, for more details refer to: https://docs.telerik.com/devtools/xamarin/controls/autocompleteview/autocompleteview-overview