That is really a good idea. I had not thought of that. I should have because I did something similar on the Legacy theme when I had to add three more home-bottom widget areas for this work-in-progress http://66.39.125.194/wp/
What I tried and which worked OK is putting text widget below the featured page widget in the welcome sidebar area. The text widget had some html <div> code so I could style the text.http://brandylanepublishers.com/wp/ But your solution will give me a bit more control.
Thanks.