I find it very helpful to keep track of my to-do's in the calendar view but when I want to add a new to-do there is no way of connecting it to an already existing activity. In order to do so, I need to go back to Initiatives which is a hassle. I would suggest make it possible directly from the calendar view when creating a new to-do.
Thank you for the idea. Given the low volume of support for this idea, we do not have plans to make updates in this area at this time. It is currently possible to edit the to-do once it's created and move it to a record of your choice. We hope that helps!
The same problem when adding to-do's in Notes.