Currently, it is only possible to configure a smart form within a specific web map (either using Web Map Viewer or Field Maps Designer). It would be helpful to be able to configure the smart form as a setting at the feature layer level, so that smart form will be the default for whatever web map that layer is added to.
Ex: we have a layer showing the boundaries of different as-built/engineering plans. In that layer there is an attribute for a link that sends you to the plan document on our hosted file site. That link is created from a unique ID. Currently in Enterprise we have an attribute rule when the user enters just the ID for that feature, it will then create the link based on the ID. It would be great to have this in AGO as well, where I would set up an attribute calculation in a smart form at the layer level, and then any new map I create with that layer would have the same functionality without me needing to configure each map that the layer is added to.
Or maybe you have a high accuracy data collection point layer where the z value is captured in meters, but you typically create a smart form that converts the elevation from meters to feet and writes the value to an attribute. This needs to happen every time a point is collected, regardless of what map it is collected in. You would set the default smart form on the layer so that attribute calculation applies to every map the layer is added to.