It would be beneficial for field names to be specific to apps rather than to pages / screens. This would help with custom PDF development, 3rd party integrations, and most likely ZAPs. If this was the case, we could move fields from one screen to another when / if needed without breaking any outputs or integrations that depend on screens.
An even bigger / more pie-in-the-sky idea would be to have the ability to control the significance level of a field by being able to select global / company, group, app, or page/screen for the level at which the field must be unique and / or could be used for potential cross-app integrations, etc. in the future. That would be very cool.