In Mac OS, you can drag a file to a folder and hover for a second before the folder “pops open” displaying it’s contents. In this way you can “drill down” into subfolders before dropping the file, and when you do, all the “popped open” folders close so you’re back where you started. It’s nice for quickly stashing a single file away deep in the folder structure without having to first open a “target” window to drag it into, then closing that window after the move is done.
I propose a similar behavior in Dynalist for top-level items which are not already expanded when a user initiates moving an item. If the user drags the item to a top-level item which has sub-items, they can hover over the bullet and it will spring open, allowing the user to deposit that item within its sub-tasks. Upon ‘dropping’ the item, the sprung-open task will re-close itself, leaving the user right where they started.