I personally think it makes sense as is, and after many frustrating years of not being able to both simultaneously in the IE games, I welcome the concept. After all, when I go running around the streets of Brooklyn, I certainly can't spot the many secrets I know are there! It takes a certain amount of focus impossible to reach at that speed. They even gave us a fast mode to avoid having to crawl around the maps, even though they aren't that large. That said, I guess I don't have an issue with a checkbox I would never use. I'm all for options, as long as they don't chew up a huge chunk of the devs' time.