It would be handy to have the ability to divide whatever you have selected into subgroups automatically, possible by using the function keys like F1, F2, etc.
Lets say I have three scouts selected, I hit ctrl F3 and the mod automatically assigns one scout each to three groups, that can be selected using keys F1, F2, F3. If i had pressed ctrl F8, it would try and make 8 groups instead, bound to the first 8 F-keys.
The difference between these "divided" groups and normal groups is that they are automatically assigned & they are very temporary ... they get removed next time you divide a selection. If you wanted to keep a group you could promote it to a normal group by selecting it (F2) and manually assigning it to a normal group (ctrl-2).
This would be insanely useful for all sorts of things, but anywhere you have a group of units and you want to give them different orders... normally you zoom in to select it, then zoom out to give it orders, then zoom back in to select the second unit, then out again. With the proposed feature, a lot of back and forth zooming is removed.