Agreed, one of my biggest gripes with the game. I would also want them to slow the time down to PlanCo speed. But as Silhouette says, who knows how many other subsystems are impacted by this that need to be changed. Everything from finances, to costs, to deterioration and staff workings would likely need to be rebalanced.
But I'm by no means saying that because it's hard or a lot of work they shouldn't do it. They got this wrong, it's an overwhelming request by the fans, and they should adress it. It's just that it might take some time for them to figure out exactly how to do it, and then get on to doing it.