As of right now it is a lot of work to properly implement a foreign key column and some of the features are only working with multiple workarounds. It would be nice to have a foreign key grid column as it already exists for ASP.NET. The ultimate goal would be to set the foreign key field which the column is bound to, pass a list of complex objects and set the text field and value field for that list.
An example of an hypothetical implementation:
<kendo-grid-column field="ProductId" [data]="ProductList" [valueField]="'Id'" [textField]="'Name'"></kendo-grid-column>
Currently all of this has to be done manually by defining a cell template and edit template which comes with a couple of limitations. The greatest limitation is that the out of the box sorting and filtering does not work since the grid will sort/filter by the Id instead of the cell template value. For the filtering additionally a custom made filter needs to be implemented for each column which displays the DropDown in the filter menu.
For ASP.NET all of these things come out of the box and are extremely helpful. Here is a link to the ASP.NET implementation for a foreign key column: https://demos.telerik.com/aspnet-core/grid/foreignkeycolumn
I wish something like that will be implemented in Angular as well in the near future as it makes the development extremely hard without this feature.
I saw the sorting/filtering together with the foreign key column as one of the main reasons to choose Telerik as it is extremely helpful and setting it apart from its competitors.