Being able to slow down time or get a birds eye tactical view, would take away from the immersive feel of having to command in real time, from the commander's semi-realistic perspective. However, what @xdj says is true; it's a singleplayer game so you shouldn't care how other people play. Well, that's fine, but then I think about games like FTL which force you to play in such a hardcore mode. Why don't all singleplayer games just let you cheat your way to victory in two minutes?
To me this sounds like a great mod idea. Or else "5 more years added to BL development time"