I submitted this feature last year, and it did not get enough votes. I will try again, especially since the new iPads have split screens that allow students to actually work in two windows at once.
I would love for students to be able to use the new split screen function in ios 9 with Canvas. Currently split screen only works with apps that are formatted to work with the new feature, and the ability to have Canvas open in one side (for content or directions) while working in Google Docs or Notability would be fantastic, especially for my students with executive functioning disorders where toggling between apps might be cumbersome.
This idea has been developed and deployed to Canvas