We are working on improving both our components and documentation. We will release improvements on this component in our future releases.
Unfortunately, we cannot bind to any specific date with promises to improve that specific part of the component. We are aware customization options are limited and will definitely extend the control in that direction in the future.
As for the multi-line text editor you can use our feedback portal
to log a feature request and we will evaluate it.
Pavel R. Pavlov
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items