I appreciate the ability to create "to do" checklists within notes. What would be really useful is if any to-do checkbox in any note would auto-populate to a "master" to-do list and stay synced (checked, unchecked) between the original to-do item and the master list. Even better would be options associated with that master list to add due dates/reminders/etc. That would eliminate what I do currently, which is to create a to-do item in a note somewhere in Evernote, but then re-create that same to-do in another reminders app (Apple Reminders) so I can track all my to-dos in one spot. Add this option and I'm a Premium user for sure.