Hi Michael,
Thanks for these thoughts! Wow, you’ve got lots of great reflections and ideas. For future reference we try not to take threads too off topic, so next time I recommend creating a new topic in the #productfeedback category for any product requests.
Regarding your thoughts on subtasks - this is a topic that we’ve discussed a lot in the Community. I think you’ll enjoy starting with this thread:
You can also search for more threads in the search bar.
Let us know if you have other questions!