Idea: In Field Maps, the markup function is a handy tool for quick random "note" type annotation on a map, though you know what would make it better? The ability to capture markup from the device location! That way, you could capture points, lines and polygons based on your location AND manual input. This combined with this idea would really enhance the usefulness of the markup function.
Use cases: Capture an important feature (e.g. contained fire edge) that you need to send to someone during emergency response for addition to incident maps when working at cross-departmental incidents without a common mapping platform.