+1. I think this is a missing piece in HubSpot over other enterprise platforms, where you can control the data integrity of non-automated data capture with built-in triggers and window popups. This would helpful across all objects, especially with deals - example, when a deal is marked "Closed-Lost," to then require entry in the lost reason field. The only way I'm aware of is to send a notification or create a task via workflow, but this works very seldomly across our entire group and causes constant reminder meetings.