This thread is a part of Hotkeys - Taking micro to the next level
If you have other Hotkey suggestions or you would like to comment on my propositions feel free do so below.
Link to old forum post which should be updated and stickied:
I think it would be cool to have a "select next unit in transport" button that cycles through individual units in a transport and allows you to make individual drops more easily. Currently, you have to click on one or a few of the unit icons to select them, drop them where you want to, and repeat. Could have it so that pressing the hotkey multiple times selects a few units in a row so you aren't limited to one unit at a time.