I agree that power management won't fix DU Factories, I doubt it will really be an issue and is mainly focussed on ship design anyway. It also goes beyond the limits of this thread, but it bothers me that Industry isn't designed with conservation of energy in mind. where is the mass going, or where is it coming from in some cases when you create something that has a different mass than your input ingredients? It would be better and more logical if mass would be conserved and we would get a certain amount of waste product and efficiency gains via skills would mean, we get more product and less waste.
Anyway, as for links, I agree a conveyor belt system that physically transports good where they need to go, and take time to get there, would be far superior to magical links where you can only have a certain number of for some reason. Transfer units won't fix magic links. It's more annoying than anything else. If we have the means to build a few dozen/hundred containers and industry elements, Transfer Units won't stop anybody, but for what they do inside the game and in the games own logic, they are too expensive.