When using Instant Start, it creates too many separate files for teachers to keep track of. May be better if this lived in the space when you are already in the whiteboard (so in a lesson, click plus you have whiteboard, whole class, shout it out and desmos, maybe instant start could be a 5th option).
Currently, to add these, you have to go out to edit mode, but this way if a teacher wanted true instant start all they would do is create a blank whiteboard file and add what they want, or could have more instant options while delivering a lesson.