Great suggestion. But i think it can be done as an extension.
For those who are not familiar, Snooze is:
Snooze emails and reminders to get them out of your way until you're ready to get to them.
Your email or reminder will come back to the top of your inbox when you want it to, whether that's tomorrow, next week, or when you get home. You can always see your snoozed items under Snoozed in the main menu.
More info here: Snooze