1.  To add box plot chart feature which shows Statistical Five Number values: Median, Q1, Q3, Min and Max.
2.  To support Points Jitter which shows points of a data set (which are used to calculate Statistical Five Number) on same chart.
3.  To show label on X-Axis of the grouping.

Add the functionality of the Page Up/Down as well as Home and End to the WPF Viewer Control, so that the displayed page may be controlled using the keyboard.
These buttons should also work with the CTRL+ variations.

Datadynamics was purchased by GrapeCity some 4 years ago but Telerik Reporting is still relying on the old assemblies for converting.  The converter needs to be updated and should support rdx as well as codebehind files.  I was able to convert the Telerik.ReportConverter.ActiveReports to use ActiveReports 7 but am not able to use the modified dll.  See attached.

As reports are commonly based on dates, some means of doing date addition and subtraction would be beneficial.

Make the F5 key (refresh) in the Report Viewer programmatically controllable by using events tied to the viewer.  For example, I want to disable the F5 refresh functionality and add my own functionality when the F5 key is pressed.  I currently have the ability to disable the refresh icon (ShowRefreshButton=false), but not the F5 key button.

Would it be possible to prioritize which characters can "Break" when wrapping text inside a text box?  For example "foobar/foobar" will not break at the slash, it'll instead break at the character that hits the width limit. It would be my suggestion that punctuation be prioritized for "breaking" before all other characters, in the event that there is no space.

In the attached example, the column headers are dynamic (localized), and there's no way to predict what the text will look like (in whatever language)... Though I accept that no matter what, a string longer than the textbox width will need to break somewhere, I'd prefer that you break on "better" characters if they are present.

(Pretty nitpicky, I know, but this would save me trying to code the logic into an expression or function... which could prove complicated due to variable width of fonts)

When using the Report Explorer, the tree automatically expands to all levels expanded, on making any change to a Property for the currently selected item.
This makes using the Report Explorer very frustrating, so you end up shouting at the window to 'Stand Still!".

Support for Apple Numbers to be able to open reports exported in the "Excel Worksheet" format.

Our client is strongly requesting a "zoom" by graphical selection feature, as available in their former tool qlikview (or amcharts,  for example).
I am surprised this feature has not been requested yet, since any user would greatly benefit from it.
It's an extremely powerful and intuitive way of restricting your selection of report input parameters in a visual manner. 
By drawing a rectangular selection with mouse over the graph, you restrict the range of both x and y axis to the selected ranges, allowing quick zoom to the area of interest
Examples: just draw selection rectangles on a chart in one of the examples below
https://www.amcharts.com/demos/scatter-chart/

http://us-b.demo.qlik.com/QvAJAXZfc/opendoc.htm?document=qvdocs%2FSocial%20Media%20Buzz.qvw&host=demo11&anonymous=true

Add a StyleName property for the NoDataStyle so it can use styles from an external stylesheet.

I've seen some suggestions similar to this, but none that are exactly the same.  I would like to have the ability to select any item within the Report Explorer and drag/drop it to the location that I want it to appear.  Perhaps this isn't possible due the way the Report Explorer works, but this would allow greater flexibility in where a control is located, versus the current Bring To Front/Bring To Back options.

If the controls and PDF generated from Designer or API from scratch will be 508 compliant? PDF needs to be tagged, so when a reader reads its images have text alternative for it to read.

HTML content is currently displayed verbatim in Report Viewer Tooltips. Tooltips should work as kendo tooltips usually do, rendering HTML when detected.

Please add full support for asp.net Core. What you currently have is not nearly complete. We need to be able to use the report designer and add reports in a .net core project and we need to be able to use reports that have objectdatasources. Currently object datasource does not work with .net core dll's.

I would like the end user to be able to resize the DocumentMap and if possible the Parameters Area.
Many times when the names are long they are cut off.
Many of my user will have clients will have similar names like law firms with a particular attorney name appended.

Example:
LAW FIRM OF DOUCHE AND BAG - JAMES SMITH ESQ
LAW FIRM OF DOUCHE AND BAG - KIM JONES

With the current implementation it would be cut off before you could see the end of the name.
LAW FIRM OF DOUCHE AN
LAW FIRM OF DOUCHE AN

This requires them to use the scroll bar back and forth instead of resizing the area like the old webforms viewer.
Please see picture for references.
Also if there was an option for the names to have tooltips so they could just hover that would be helpful.

The parameter map at least will wrap the names that are long it’s the DocumentMap that is the bigger problem.
Thanks John

We need ein new Function in the group "Aggregates" to insert a "SubTotal". It means a function like "Sum(expression)", but it provides not the sum of the whole group, rather the Sum of des Group until this Page. It is normaly printes on the pageFooter-Section or groupFooter-Section. But it would be nice to have this Sum on the next Page of the groupHeader.

In the "Configure SQL Data Source" window. Let us be able to maximise the window for the "Select Statement". First, the query builder can do nothing as soon we use a little bit complexe query. And for long query, it's a pin in the ass to work with two scroll bars. 

Thanks