Hello,

We have such issue logged in our GitHub repository with label "feature request". You can add a comment there as well:

https://github.com/IgniteUI/igniteui-angular/issues/3654

As for the Ctrl + mouse click functionality, this comes by design with our multi row selection, by using the checkboxes on the left:

https://ko.infragistics.com/products/ignite-ui-angular/angular/components/grid/selection.html

Let me know if you have any further questions.