just the same like here
https://www.combit.net/en/reporting-tool/pdf-object/

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

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)

We redefining an existing table style (ie. Aspect) in an external style sheet, the user should be able to select the style like now, but disable the style generation in the report file.
Currently, we need to go in the designer.cs file to remove all unwanted styles.

Currently, the designer automatically increase the width of parent containers when a control is moved or resize and goes outside the current parent size.

But this can be problematic with bad paging in some cases. 
As the automatic grow may be needed, I propose to increase the parent size with a settable minimal step:

When having set everything to have a width of 160 mm, just moving some controls can currently increase slightly the size (like 160.23 mm). But if the report has a minimal grow step of say 5 mm, in this case it will be resized to 165 mm, a visible size difference (therefore, layout can be corrected when the grow was unwanted).

In the Configure Object Data Source Wizard, add a method of filtering the displayed Business Objects.
Where a large number of Business are display, scrolling can be painful to find the required one.

As of the latest Reporting release the JavaScript size to download went from 61K to over 2MB. Our users work for charities and often have slow network connections. This is not an acceptable change for us.

Add the ability to control the relative position of text in relation to the image for both Radio & Check Boxes, such as TextImageRelation property used on your WinForms Radio & Check Boxes.
This would allow the following options: Overlay, ImageAboveText, TextAboveImage, ImageBeforeText, & TextBeforeImage.

On opening the Expression Editor, if at least one Data Source is present on the Report, then the Fields item in the tree should automatically be selected. If no Data Sources are present on the Report, then the default selection should be the Report Parameters.

The ability to use static values and display members as an array for a multi value parameter. I want my team to be able to use the standalone report designer without a custom User Function or a data source. We had been using SSRS and made a switch to Telerik, and this seems to be the only hangup that we are unable to convert cleanly.

Allow custom buttons and other controls to be added to the existing ReportViewer Control Toolbar.

The Standalone Designer allows a template to be loaded from a .NET dll. Add the ability to load a template from a .NET exe.

The report Parameter as of now can only be Boolean, Date, Int, Float or String. It would be great to be able to have a Guid parameter. This is particularly useful when passing a Guid to a child report parameter that in turns needs to be a Guid again to be run in the query. As of today we must convert the Master Guid to String to be able to assign it to a parameter then the child report reconverts it into a Guid to be passed to the query

As a reports author, I would like to reuse one and the same page section in multiple reports, so that I can modify the header at once and spare the copy/paste operation.

As a developer integrating TRDX/TRDP reports into my app, I would like to have built-in functionality to pass runtime data sources corresponding to the data sources defined at design-time along with the ReportSource, so that I can feed the report with custom data easily instead of having to deserialize the report and traverse all DataItem-s

It would be nice if the parameter window to enter Report parameters in  preview mode would remember the last values entered between invocations.

When configuring a datasource through the wizard, the 'Select Statement' TextBox should standard support keyboard shortcut ctr+A to selelct all. Having to open the context menu is a bit awkward.

When selecting several items, it should be possible to change the size and location of all of them, at least if the values are the same