I would be extremely helpful to have the equation editor integrated into the next version of Onenote. As a student writing notes, writing an equation is a really typical thing I do. At present the only option is to write the equation in Word or Powerpoint and past it into Onenote as an image. This works but you lose the ability to edit the equation and it's time consuming.

I would submit this as a suggestion but there's no option for it in the submission form.