We developed a little app observing your simulator folders. you can quickly access them via a status item. The information is kept up to date. You can directly reset an app (delete contents of /Library and /Documents) or remove it completely.
you are right, we’ve seen this. but the problem with simulator folders is (or was: i didn’t test it in its latest versions) that the folder structure doesn’t get updated while you are running it. so when you install a new app in simulator you have (or had) to restart it. it also has no direct access to reset the storage (your CoreData and user defaults) of an app. that’s my most often used feature.