As someone who had two monitors at the time (that was more a geeky thing by then than now), it was my favorite feature of the game. Also in-game shields.
Yup, strategic zoom on monitor 2, micro control on monitor 1.
If you never played SupCom, you would imagine that being terrible since most RTSes of the day were so fast paced, but SupCom followed much more of the SiNS/Stellaris/etc flow of gameplay. High level strategy with microcontrol.
Watching your waves of tanks (in strategic view) slowly push back their line of artillery because you simply strategized better as your air force slowly picked off economic resources was so satisfying.
