Going back to Gmail, it is pretty baffling the features it is missing from inbox. Lacking bundles is bad, but having no equivalent to archive/mark all as read is terrible. I used to do a quick scroll through my junk to verify I didn't actually need anything, then click "archive all". Now I have to individually select each individual email to do a group archive/delete.

Heck, not just zero-inbox, but zero-todos. By being able to set reminders, I had a single point for all my own todos, and the ones sent to me by others (aka emails). Now they advice you to add a separate pane with Google Keep or Tasks, which means you're managing them separately. I also have no idea what will happen with the reminders I've set for later than today.

I agree, but you can archive emails in gmail and it does the same thing as setting an email to done in inbox. You can still search for them in the search box or browse the all mail category.