If there was a way to see the original due date, like a milestone, would be handy. This way you can always see the original deadline. Otherwise you just keep rescheduling the subtasks. There should be a option for a fixed due date maybe, so you get an popup warning that with changing the subtasks due date you are not within the parent tasks due date.

I think have it turned on automatically but be able to turn off per list level

I would vote for list level functionality as it gives more granular control

I think it should be default behaviour on all tasks so space level is fine. But, maybe, disable as needed on a list level.

Space level would be fine for us, although granularity is also always appreciated.

I would prefer it as a setting that can be set at lidt level. And it should enable on task that does not have a set due date.

Maybe it should be run as an automaton? that can be easily activated like “auto assign”. That way the user can enable it at all levels with all the exceptions they might need and the average user can just enable it as they want.

It should be on space, folder setting-based and list levels. Should be setting based and let the user decide how and where they want to apply it.,

At the list, folder and space level should be very useful.

All levels please. User decide.

All levels would be great. I would personally set a default at the space level and then have some list templates I'd like to keep the setting turned off for.