Connectable: I cant code this stuff.
Shyrka: Un-commanded unit would stay still, additionally, when a unit has been ordered, they could fall out of the group, allowing you do unpress the function key and just send the rest somewhere.
Fealthas: mostly for placing scouts accurately, you make it more advanced with ability to decide which units go first, id say closest uncoommanded unit goes, but u could make it the lowest HP or even the highest.
Anir, I think there are some other usefulness things to this, if one got use to it, it could even be used as battle micro. Mostly good to place unit far away from position (scrolling). Also would be a more specific alternative to area bombing.