[D] the control group

(yes with free slots too)

in a "world of starcraft" map / sc3,

you have a warcraft like gameplay,
a hero to toggle story/scenario/script events in their win conditions
(like challenging an npc map boss as a win condition)

..picture it,
in all the franticness of managing
a hero
workers
buildings
scouting baiting dropping running kitting stealing units blocking them evading them upgrading them pinpoint mass nuking
with units aiming ...

.. in that context
would not a dynamic* automatic control group mechanic be wise ?

Obviously that is what i have chosen to implement in my map/game
link here

and i would like to hear your take on it
+ Show Spoiler +