Allowing you to track how long it actually takes to finish a task by when you start versus when you complete it to help support better time management for projects and time estimation in the future.
I would think this could be done easily with the Apple Watch widget as well.

Hi Kyra
Thank you for this suggestion! When you start an activity or routine before the set start-time and end it before as well, you get the exact start and end times for when you did the task. Is it something else you had in mind here?
Unfortunately Apple Watch Widgets are quite limited in how you can interact with them. Complications can only show information from the app and with a tap enter into the app itself.
Hope this helps!