I wasn't sure this was a bug or a feature request, more a use-ability improvement.
When I am attempting to move a card into another card, in sheet view, it is soo difficult to actually do it reliably.
More often than not the UI will try and move it above or below the list of cards in the sheet, and a user finds themself looking to get a micro-movement of their mouse to find that sweet spot in the UI where the drop will result in a "Move into" rather than a move above or below.