The borders can be removed by pressing the "No borders" button in the borders tool (screenshot
). However as you can see in the screenshot its icon is missing, so it is definitely difficult to spot. I've just logged this for fixing (see this
issue through which the bug's status can be tracked).
I updated your Telerik points for your involvement in identifying this issue.
As for the other suggestions we would recommend posting them in the Feedback Portal
, where the logged feature/enhancement requests are being reviewed and evaluated for future implementation.