The game was never meant to be played with you glued to the screen. It's meant for you to apply foresight and planning, give orders and then step away from it for hours at a time. That's absolutely normal and pretty much near everybody has played the game like that for over a decade. It's how it was designed to be played. Remember that your opponents are in the same situation and will also need to eat, work, sleep...
That's why the pace of the (regular) game is so slow. So that checking in every once in a while is how you can play it. Of course we've all been there and felt the pull of an urgent situation in the game, but such a drastic remedy as the one you're suggesting would change the entire fabric of the game. Would construction orders then also be paused during the night? Why should I not be able to give an order during the night that will be executed to completion at some point during the day anyway?
I think you're sort of approaching the game the wrong way. Yes, high activity can benefit you massively. But it's not the backbone of success by any stretch. People have won games by only checking in every couple of days.
I have to reiterate that this would just be an extra event added to the rotation. This would not impact regular supremacy game worlds. And when you're at war with someone mid to late game, you need to be on virtually 24/7 to react to any changes. I strongly disagree with you, being active IS the backbone of success in this game. An active player will always beat a semi active player. In this hypothetical game mode, everything gets paused for maybe 5 or 6 hours at night, including construction. I don't see why you would oppose it. If you're not a fan, just don't play in this game mode. Play in the regular game mode. The more game modes this game has, the better it becomes