I am thinking about this and agree it should be a thing again, it mostly bugs me that it feels very muddy and a bit confusing if you have both of these on. And I think we should add a more descriptive caption or something, very difficult to cleanly communicate these options with just a single line of text!
Maybe you should use three lines: Task Count Icon Badge Count All Tasks Count Overdue Tasks Only
The second and third lines appear only when icon badge is on and you can select only one of them.
Also seriously considering if badging should be default behavior for reminders. I’m kind of imagining only if it’s for later in the day, and remaining badged until it fires? (With a complication to turn this off… perhaps.) But yeah something I need to sleep on / digest some more.