Thank you for contacting us and submitting your request. We have had ideas for such control before, but displaying large amounts of text in the traditional way always comes with a lot of performance issues. We might be able to utilize Direct2D but for the moment we still need to do our research. Do you need such control to read pdfs maybe?
Have a suggestion or face a problem - you can use the Ideas & Feedback portal
to submit ideas, feedback and vote for them.