BillyW, yeh, comments like that by those who don't own the product being discussed and know little about it confirm there are some heads buried in the sand. Those who own the ED are quite happy with them and enjoy their towing abilities fine. The op mentioned a 5000 pound trailer, of which the ED would pull with ease and have plenty payload for passengers and provisions. If I were buying tomorrow for such a task, that ED would be on top of the list. I had a 2013 5.7 RAM with 3.55 rear and 6 speed. I didn't think the transmission allowed the engine to make its power as well as it should. I traded it for a 2014 5.7 with 3.92 rear and 8 speed. The difference is night and day. It pulls my trailer much better and is so much better in everyday driving. Fuel mileage pulling a 5000 pound full frontal area trailer would probably average around 10. About the same as a Eco(or)Boost, a GM 5.3 or 6.0 or any other capable half ton truck. That trailer's wind resistance requires power to overcome at highway speeds and the only way to make power is to burn fuel.
My advice to the op, if you think you might enjoy a diesel powered half ton Ram, get it and enjoy it. It's limitations are beyond your stated requirements.